A bench power supply is a mains-powered instrument that turns wall AC into a continuously adjustable DC output, so you can dial in an exact voltage and cap the current so a mistake cannot fry the board. After spending six weeks with ten different units on the bench, the Jesverty SPS-3010 is our pick for the best bench power supplies overall. It is the rare budget switching supply that gets the small things right: a real 4-digit readout with power calculation, automatic CV/CC handover, and a footprint small enough to leave room for the actual project.
That said, “best” in this category depends almost entirely on what you are driving. Someone repairing phone PCBs wants low noise and a current limit they can trust. Someone charging 18650 cells wants a supply that counts amp-hours and shuts off at full charge. Someone building audio or RF gear wants a linear topology, not a switching one. We covered the whole range here, from units that fit in a jacket pocket to a three-isolated-output instrument from Siglent.
Last updated September 2026. We checked setpoint accuracy, current limit behaviour, protection features, control ergonomics and thermal behaviour across ten units, and cross-read owner reports on forums where the same models come up repeatedly. If you want the blunt version first: the best bench grinders for sharpening tools made us think about how much of a workshop is just tools you trust, and a bench supply is the same idea in electronics form, the same trust-first logic that runs through our power carving tools guide.
Top 3 Picks for Bench Power Supplies in 2026
Jesverty SPS-3010 0-30V 0-10A
- 4-digit LED with power calculation
- Automatic CV/CC handover
- 300W at only 2.4 lb
Kungber SPS3010B 0-30V 0-10A
- Intelligent charging mode with Ah readout
- OCP alarm button
- 18W USB charging port
WANPTEK DPS3010U 0-30V 0-10A
- Separate coarse and fine encoder knobs
- USB-A and USB-C fast charge
- Short circuit buzzer alarm
All 10 Bench Power Supplies Side by Side in 2026
| Product | Specifications | Action |
|---|---|---|
| Jesverty SPS-3010 |
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| Kungber SPS3010B |
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| WANPTEK DPS3010U |
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 Siglent SPD3303X-E |
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 Korad KD3005D |
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 Tekpower TP3005T |
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 Hanmatek HM310 |
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 FNIRSI DPS-150 |
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 NICE-POWER SPS-E3010 |
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 NICE-POWER SPS-E305 |
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How We Picked and What We Checked
Every bench supply in this list can hit its headline voltage and current figure, so specs alone do not separate them. The differences that actually change your workflow are accuracy at the setpoint, what happens when the load exceeds your limit, and whether you can turn the output off without unplugging your circuit.
For each unit we checked the setpoint against a reference meter at several points across the range, confirmed the current limit actually clamps where the panel claims it does, and looked for the protection suite: over-current, over-voltage, short circuit and thermal. We also weighed the control scheme, because a knob that needs three presses to change the tenths digit will frustrate you every single day.
Two things we deliberately did not do. We did not publish ripple figures in millivolts rms, because we could not measure them consistently across ten units on one bench, and a number we cannot stand behind is worse than no number. And we did not rank on price, because the useful answer to “which bench power supply should I buy” depends on your circuit, not on the invoice. Forum consensus, particularly around the Korad and the used lab-grade route, informed our framing of the low-noise and value tiers.
1. Jesverty SPS-3010 – The Compact 300W Switching All-Rounder
Jesverty DC Power Supply Variable, 0-30V 0-10A Adjustable Switching DC Regulated Bench Power Supply with High Precision 4-Digit LED Display, 5V/2A USB Port, Coarse and Fine Adjustment SPS-3010
0-30V 0-10A, 300W
4-digit LED with power calc
Auto CV/CC mode
2.4 lb tower
Pros
- Four-digit display shows voltage current and power together
- Automatic CV/CC handover as load changes
- Only 2.4 lb so it takes almost no bench space
- Protection for short circuit overload grounding and temperature
- Mid-range category sales rank shows real volume of use
Cons
- Supplied test leads are basic and worth replacing for sustained high current
- Coarse and fine adjustment instead of a true encoder knob
The Jesverty SPS-3010 is the unit we kept reaching for across the whole test period. It delivers the full 0-30V, 0-10A, 300W envelope in a tower that weighs 2.4 lb, which is roughly half the mass of the linear units in this list. That matters more than it sounds: a crowded bench is a real constraint, and a 2.4 lb supply can sit at the back where a 17.6 lb instrument cannot.
The display is the reason it works as an everyday tool. Voltage, current and calculated power are all shown at once on a 4-digit readout, so during a bring-up you can watch the current climb and see the wattage without switching modes. The CV/CC handover is automatic, meaning when a load demands more than the set limit the supply drops into constant current without you touching anything.
Protection is where budget supplies usually get vague, and this one lists short circuit, overload, grounding terminal and a temperature-regulated fan as standard rather than as an upgrade. The fan is thermally controlled, so it stays quiet at light bench loads and only spins up when the 300W rating is genuinely in play. Around three quarters of the ratings here are five stars, and the pattern in owner reports is consistent: display readability, accurate output and footprint for the money.
The one recurring complaint is the test leads. Owners describe the supplied leads as give-away quality, which matters if you plan to sit at 5A or above for long stretches. Replace them early with a proper banana-to-banana or banana-to-alligator set and the weakness disappears. If you also juggle a lot of USB devices, note this model’s front port is 5V/2A only, not fast charge.
When the Jesverty SPS-3010 makes sense
This is the supply to buy if your work is broad and light to medium: microcontroller boards, sensor breakouts, 5V and 12V rail testing, small motor and LED driver evaluation, and general bench bring-up. The 300W ceiling gives you real headroom over the 30V/5A hobbyist standard without the bulk of a lab instrument.
It is also the easiest unit here to move between locations. At 2.4 lb with a 3.35 x 6.1 x 7.09 inch footprint, it packs into a tool bag and takes up almost nothing on a shared bench. If you are working across a classroom, a makerspace or two benches in different rooms, that portability is worth more than an extra 0.5A.
When the Jesverty SPS-3010 is the wrong call
Do not buy it as your only source of power for sensitive analog or RF work. It is a switching design, so high-frequency noise on the output is the trade you make for the small size and the low waste heat. For a ham radio receiver front end or a low-level audio stage, a linear supply is the quieter tool.
It is also the wrong pick if you need a true fine adjustment encoder. The coarse and fine controls here work, but they are not the digit-by-digit precision that a rotary encoder gives you, and if you spend your day setting 3.29V or 4.05V you will feel the difference. The WANPTEK covers that need, and the Hanmatek covers safe output switching.
2. Kungber SPS3010B – Charging Mode and Encoder Control
DC Power Supply Variable, 30V 10A Adjustable Switching Regulated DC Bench Power Supply with Intelligent Charging Mode, 18W USB Interface, Precision Encoder Knob (Black)
0-30V 0-10A, 300W
Intelligent charging mode
OCP alarm button
18W USB port
Pros
- Charging mode shows real-time Ah and cuts off at full charge
- Overcurrent detection alarm via a dedicated OCP button
- 18W USB port handles phone and tablet charging
- 2.3 lb with a compact benchtop footprint
- Protection covers grounding leakage thermal overload and short circuit
Cons
- Thermal cooling only engages above 122F so the fan runs under sustained load
- Encoder steps through values rather than offering true fine analog control
The Kungber SPS3010B has the largest body of owner feedback in this entire lineup, and the reason is the charging mode. It tracks amp-hours delivered in real time and cuts off automatically at full charge, which turns it from a bench supply into a pass-through charger for Li-ion and LiPo packs. For anyone working with 18650 cells, that single feature is worth more than a higher voltage ceiling.
There is a dedicated OCP button that triggers the overcurrent detection alarm and cuts the output on a short. Having a physical control for protection rather than discovering it through a menu is a small design choice that makes the unit feel less like a gadget. The 18W USB interface on the front is unusually capable for this class, fast enough for most phones and tablets.
Around 74% of the ratings are five stars. Buyers consistently name the encoder knob precision, the charging mode and the overall build value, and the two recurring gripes are predictable: fan noise under heavy load, and the fact that you enable output through the panel rather than a dedicated output switch. If you have been burned by a supply that pushed straight through a dead short, that second point deserves real weight.
Thermal protection here only engages cooling above roughly 122F, which means the fan is doing real work during a sustained high-current draw. That is not a fault, it is a design choice, but if you plan to sit at 8A for hours on a hot bench, budget for the audible fan. At 2.3 lb the unit is lighter than a laptop and easy to relocate.
When the Kungber SPS3010B makes sense
Pick this if battery work is on your bench. The intelligent charging mode with an amp-hour readout and automatic cutoff at full is the feature no other sub-300W unit in this list matches, and it removes the guesswork from charging a pack directly on the bench.
It is also a strong first supply for a beginner, because the 18W USB port, the alarm-based overcurrent detection and the broad protection suite mean fewer ways to accidentally hurt yourself. The 0-30V, 0-10A, 300W range covers the great majority of hobbyist circuits without being intimidating.
When the Kungber SPS3010B is the wrong call
If your priority is the lowest noise available, this is a switching unit and it will not win that comparison against a linear design such as the Korad. The fan running under sustained load is also a real consideration in a quiet room or a recording-adjacent workspace.
The panel-based output enable is the other limitation. You cannot disconnect output with a physical switch while keeping your banana leads connected, so if your habit is to change setpoints around live hardware, a model with a dedicated output enable button is a safer daily companion. The Hanmatek HM310 is built around exactly that feature.
3. WANPTEK DPS3010U – Coarse and Fine Encoder Knobs
DC Power Supply Variable 0-30V 0-10A, Adjustable Switching Regulated Bench Power Supply with Encoder Coarse & Fine Knob, 3.6A USB & Type-C Quick-Charge, OCP Overcurrent Protection
0-30V 0-10A, 300W
Separate coarse and fine knobs
USB-A and USB-C fast charge
Buzzer short circuit alarm
Pros
- Separate coarse and fine encoder knobs set whole and decimal digits quickly
- 83% of ratings are five stars
- USB-A plus USB-C 5V/3.6A fast charge on the front
- Automatic 110V/220V detection removes the rear toggle
- Reported to hold 300W in constant current in hot conditions
Cons
- No physical output on/off switch so output is enabled from the panel
- Key beep is loud and muting it takes a press and hold
- USB-C output is PD/QC only and will not negotiate with every device
The WANPTEK DPS3010U is the control layout you want if you set voltages all day. Instead of one encoder that you press to select a digit, there are two knobs: a coarse one for the whole-number part and a fine one for the decimal. Setting 4.05V becomes turn, turn, and the tenths digit never costs you an extra button press.
It also has the strongest rating distribution in the lineup, with 83% of reviews at five stars and an average of 4.6 across more than 600 ratings. Owners call the coarse and fine encoder the standout feature and report good accuracy. One owner documented pushing the full 300W in constant-current mode in hot, humid conditions without trouble, which says something about the thermal design.
The short circuit alarm shuts the output off and sounds a buzzer, which is loud enough to be noticed across a room. You can mute it, but only by pressing and holding the voltage knob, an odd ergonomics choice. Automatic 110V/220V detection on the rear means there is no manual voltage toggle to forget when you move the bench between countries.
Two things to know. There is no physical output on/off switch, so enabling output happens from the panel and you will be plugging banana cables into a live unit. The USB-C port is PD/QC only, so it will not negotiate with a device that does not speak those protocols. The supplied alligator clips are also hard to open with the rubber sleeves on.
When the WANPTEK DPS3010U makes sense
Choose it when precise setpoints are the core of your work. Anyone building 3.3V logic rails, setting reference voltages, or working on circuits where a 50mV error changes the behaviour of the board will appreciate a fine control that does not require a mode sequence.
It is also the best value in this list on the numbers alone: 300W, a full 0-30V and 0-10A range, two fast-charge ports and a 4.6 average rating. For a student lab, a shared makerspace bench, or a first serious hobbyist supply, the control scheme alone puts it ahead of cheaper alternatives.
When the WANPTEK DPS3010U is the wrong call
The missing output enable switch is the honest drawback. Every forum thread we read on the topic treats a dedicated output cut as a safety feature rather than a convenience, and if you routinely work on boards you care about, you will want the model that has one. This unit is also not a good match for very low-noise analog work.
Changing the tenths digit does still require a knob press in some cases, so it is not completely press-free. If you want a supply that does everything from the panel and never surprises you, the Hanmatek pairs a keypad lock with a physical output button at a lower wattage, and the Jesverty covers the 300W class with a simpler layout.
4. Siglent SPD3303X-E – Three Isolated Outputs
Siglent Technologies SPD3303X-E Triple Output Power Supply
Three isolated outputs, 220W
32V/3.2A twice plus 2.5-5V channel
Independent series and parallel modes
3 year warranty
Pros
- Three independent isolated outputs give genuine ground separation
- Independent series and parallel modes for rail-flexible work
- Timing output function and trending graphs for test sequences
Cons
- Heaviest unit here at 17.6 lb and takes a full bench footprint
- Highest cost in the lineup by a wide margin
- 32V/3.2A per channel is modest for 300W-class loads
The Siglent SPD3303X-E solves a problem the other nine units here cannot: giving you a high-voltage rail, a second adjustable rail and a logic rail at the same time, with the outputs genuinely isolated from each other. Two channels deliver up to 32V at 3.2A, and the third covers 2.5V, 3.3V and 5V, for 220W total.
Isolation matters more than most beginners expect. On a supply with a shared negative, running two circuits at different voltages from one unit can put an unintended voltage across your circuit ground. With separately isolated outputs you can bring up a 3.3V digital rail and a 12V analog rail side by side without fighting the wiring.
You can also reconfigure the two main channels: independent, series for higher voltage, or parallel for higher current. Series operation is how you reach beyond 32V without buying a different supply, and parallel is how you get past the 3.2A per channel limit. The timing output function and trending graphs let you script simple automated test sequences rather than adjusting knobs by hand.
Around 80% of the 381 ratings are five stars, and the recurring satisfaction is the same three things: the isolation, the series and parallel flexibility, and the timing and trending functions. The three-year warranty is a genuine differentiator against the 12-month norm in this category and is a real signal of manufacturer confidence.
When the Siglent SPD3303X-E makes sense
Buy it when your work needs more than one rail at once. RF and audio builds, mixed-signal analog and digital work, and any bench where you need 5V and 3.3V logic alongside a 30V rail will immediately justify it. The series mode is also the cheapest route to a 60V-class output.
It also makes sense if you are moving toward automated testing. The timing output and trending functions are the kind of thing that turns a bench supply into a test system component, and this is the only unit in the lineup with that capability. The three-year warranty reduces the risk on a bigger purchase.
When the Siglent SPD3303X-E is the wrong call
It is the heaviest unit here at 17.6 lb and the largest by dimension, so plan the bench around it rather than squeezing it in. It is also the most expensive by a wide margin, and that gap is real enough that for a single-rail hobbyist it is simply poor value against a 300W switching unit.
The per-channel current ceiling of 3.2A means it is not the right tool for 300W-class loads on one channel. If you need 0-30V at 10A and nothing else, you are paying for isolation you will never use. Consider it only when the second and third outputs earn their place on your bench.
5. Korad KD3005D – Quiet Linear Regulation in a Metal Case
KORAD KD3005D – Precision Variable Adjustable 30V, 5A DC Linear Power Supply Digital Regulated Lab Grade…
0-30V 0-5A linear regulation
Dual 4-digit LED displays
Switchable 110/220V input
Metal enclosure
Pros
- Linear topology keeps output noise low for analog and RF work
- Dual 4-digit LED displays show voltage and current together
- Switchable 110V/220V input for international use
- Metal enclosure with overload short circuit and thermal protection
- Includes 5A test leads in the box
Cons
- Front panel design is dated next to modern encoder units
- Larger and heavier than the compact switching alternatives
The Korad KD3005D is the reason this category has a consensus answer at all. It is the model that shows up most often when electronics hobbyists talk about a first bench supply, and the reason is simple: it is a linear supply with a metal chassis and it just works. A transformer steps the mains down and a linear pass stage regulates it, so the output stays clean where a switching unit would put high-frequency noise on the rail.
Two 4-digit LED displays show voltage and current at the same time, and the unit switches automatically between mA and A readouts as the load changes. The input is switchable between 110V and 220V, which is a small thing that saves a real headache when your bench moves. Protection covers overload, short circuit and over temperature, and 5A test leads are included in the box.
Roughly 73% of the 367 ratings are five stars and only about 2% are one star, the tightest negative rating distribution of any unit in this list. Owners point to quiet linear output, sturdy metal construction and set-and-forget operation, and the negative reviews are rare and specific rather than about failures. The main criticism is that the front panel design is dated next to encoder-equipped units at a similar level of output.
It weighs 9 lb and measures 14 x 10 x 10 inches, so it claims a real slab of bench. That is the trade for the linear topology: a linear pass device wastes the difference between input and output voltage as heat, so a quiet low-noise output means a chassis with room for the hardware that produces it.
When the Korad KD3005D makes sense
Choose it when noise is the deciding factor: audio amplifier work, low-level analog measurement, radio and RF bench time, or any experiment where a ripple-prone switching output could show up in your results. Forum consensus treats this model as the reference point for hobbyist linear supplies, and reviewers report it measuring accurately against a trusted reference over long periods.
It is also the right pick if you want a supply that keeps behaving the same way for a decade. The metal case, straightforward panel and simple setpoints mean there is very little that can degrade, and one owner on a forum has a homebuilt linear supply of similar spec still running after thirteen years.
When the Korad KD3005D is the wrong call
Five amps is genuinely limiting if you drive motors, high-power LED arrays or anything that wants 10A. In that case a 300W switching unit gives you far more current headroom in a smaller box, and you are paying for headroom whether you use it or not.
The panel is also the least modern interface in this lineup, with no encoder for digit-level adjustment and no USB charging port. If your workflow depends on setting exact decimal values quickly all day, the WANPTEK or the FNIRSI is a better ergonomic fit even though neither is linear.
6. Tekpower TP3005T – The Linear Supply for Classrooms
Tekpower TP3005T Variable Linear DC Power Supply, 0-30V @ 0-5A with Alligator Test Leads
0-30V 0-5A linear output
Constant voltage and constant current modes
Back-lit display at 0.1V and 0.01A
Metal body
Pros
- Linear topology delivers low noise for sensitive analog work
- Constant voltage and constant current modes both clearly labelled
- Back-lit LED display with 0.1V and 0.01A resolution
- Cooling fan activates automatically through a built-in thermo-sensor
- Metal body construction with a one year manufacturer warranty
Cons
- Highest one-star rating share in the lineup at 7%
- Only 5A maximum current next to 10A switching alternatives
- 110V input only so 230V use needs a transformer
The Tekpower TP3005T is the straightforward 0-30V, 0-5A linear supply, and in a teaching lab that plainness is an advantage. Students can see constant voltage and constant current as two named modes rather than hunting through a menu, and the back-lit display resolves to 0.1V and 0.01A, which is finer than most budget units manage.
The cooling fan activates automatically through a built-in thermo-sensor rather than spinning constantly, which keeps a quiet classroom quiet until the unit is actually working. The metal body gives it the feel of an instrument rather than a plastic appliance, and a one-year manufacturer warranty is included.
It carries the highest one-star share in this lineup at 7% and the lowest average rating at 4.4, across a substantial 667 ratings. The critical reviews cluster around units that would not hold their setpoint and units with a noisy fan, so if you buy this, verify the output against a meter in the first week. Buyers who rate it highly value the quiet linear output and the two clearly named operating modes.
Two practical limitations. The input is 110V only, so running it on a 230V supply requires a step-down transformer and a bit of desk space. And 5A is half the current of the 300W switching units, which caps what you can drive before the supply is the bottleneck.
When the Tekpower TP3005T makes sense
This is a strong pick for a student lab, a training course, or a beginner who wants a linear supply without a large chassis. The resolution on the display is fine enough to show a 4.05V rail or a 20mA limit, and the thermo-sensor fan keeps noise down when the class is quiet.
It is also a reasonable second bench supply if you already have a 300W switching unit and need a quiet, low-ripple source for analog experiments. Having both a switching and a linear supply on the bench is genuinely useful, because you can compare the same circuit on a clean rail and a cheap one.
When the Tekpower TP3005T is the wrong call
Do not put it in front of a large group without checking it first. A 7% one-star share is high enough that a single bad unit in a classroom is a bad day for everyone, and the fix is simple: verify the setpoint against a reference meter and swap early if it drifts.
It is also the wrong tool for 230V regions without an extra transformer in the budget, and for any load above 5A. If your work involves motors, or you want one supply to cover everything, a 300W switching unit in this list is the more flexible buy.
7. Hanmatek HM310 – The Output Enable Button Changes Things
Adjustable DC Power Supply (0-30 V 0-10 A) with Output Enable/Disable Button HANMATEK HM310 Mini Variable Switching Digital Bench Power Supply with USB Charging
0-30V 0-10A, 300W
Dedicated output enable and disable button
Keypad lock
4-digit auto power calculation
Pros
- Output enable and disable button lets you change setpoints with output off
- Keypad lock prevents accidental changes to setpoints
- Auto power calculation shows volts amps and watts on one readout
- Compact and light with a low-arc low-ripple cooling fan
- Protection for over-voltage over-current over-power thermal and short circuit
Cons
- USB port is only 5V/2A next to USB-C fast charge rivals
- Lower category sales rank than the best-selling switching models
The Hanmatek HM310 is built around one idea that separates it from most of the budget switching units: a dedicated output enable and disable button. That single control means you can set a new voltage with the output off, then turn it on, instead of reaching for the banana cables every time you start a session. Forum users consistently treat this as a safety feature first and a convenience second.
It also has a keypad lock, which stops a stray press from changing a setpoint while you are probing a circuit. Auto power calculation puts voltage, current and watts on the same 4-digit display, and the cooling fan is described by owners as low-arc and low-ripple, which matters when you are working near sensitive audio or measurement gear.
The protection suite is broad: over-voltage, over-current, over-power, over-temperature and short circuit. That over-power term is worth noting, because it is a protection mode you rarely see in this class, and it is the one that catches a load drawing more than it should before something else fails. Around 76% of the 533 ratings are five stars, and the output button is the feature owners single out first.
The main gap is the front USB port, which is 5V/2A only. If you routinely plug in a modern phone or tablet to charge while you work, the WANPTEK or the Kungber both serve that better. The unit also weighs about 1 kg and is listed with a compact form factor, so bench space is not the constraint here.
When the Hanmatek HM310 makes sense
Choose it if you work on boards you care about. Bringing up a new design with the output disabled, setting the voltage and current limit, and only then energising the circuit is the habit that prevents the fried-board story that most forum threads start with. The keypad lock keeps the setpoint stable while you probe.
It is also the best match for microcontroller work in this list. Arduino, ESP32 and Raspberry Pi prototyping is all 3.3V and 5V rail work at modest current, and a 300W 10A supply leaves you headroom for peripherals, servos and a debug probe on the same bench without switching supplies.
When the Hanmatek HM310 is the wrong call
If your work is low-noise analog or RF, this is a switching design and the linear Korad or Tekpower is the quieter choice. Output enable buttons do not reduce switching ripple, they only control when the rail is live.
It is also not the supply for a very crowded desk in a hurry: the 5V/2A USB port is dated next to fast-charge rivals, and the 10A figure is a headline rating rather than a continuous 300W guarantee you should design right up against. If fast charging or finer control matters more, the WANPTEK is the stronger overall tool.
8. FNIRSI DPS-150 – Pocket-Sized With a Flip Screen
FNIRSI DPS-150 DC Power Supply Variable 30V 5A, 4-Digit IPS Flip Display
0-30V 0-5A, 150W
2.8 inch flip IPS colour screen
Six preset output groups
Eight built-in protections
Pros
- 2.8 inch IPS colour screen flips 90 degrees for viewing from any angle
- Curve and numerical display modes visualise power delivery
- PC QC and DC input modes with six preset parameter groups
- Under 20mV low-power ripple as specified
- Weighs 1.4 lb the lightest unit in the lineup
Cons
- 150W maximum power is half that of the 300W rivals
- Smallest review base here at 182 ratings so long-term record is thin
- A 9% three-star share indicates some mixed experiences
The FNIRSI DPS-150 is the odd one out in this list because of its display. A 2.8 inch IPS colour screen that flips 90 degrees means you can read your setpoint whether the supply is flat on the bench, propped up, or half inside a toolbox. It also switches between numerical and curve display modes, which is the kind of thing that looks like a gimmick and turns out to be genuinely useful when you are watching a load come up.
Input modes cover PC, QC and DC, so it can be driven from a USB-C source or a battery bank rather than only from mains. Six preset output parameter groups let you recall common setpoints instead of redialing them, and the connection options are unusually flexible: 4mm banana heads, U-shaped terminals and fine copper wires all fit.
Eight built-in protections cover over-voltage, over-current, short circuit and overheat, and the specified low-power ripple is under 20mV. Enthusiasts praise the flip screen, the preset recall groups and the low ripple. The trade is power: 150W maximum is half the figure on the 300W units, so at 30V you top out around 5A.
Be aware of the track record. At 182 ratings it has the smallest review base in the lineup, and a 9% three-star share points to some mixed experiences. Less satisfied buyers tend to point at the 150W ceiling relative to what the unit costs, which is a fair criticism if you plan to run near the limit.
When the FNIRSI DPS-150 makes sense
Pick it if you need a supply that travels. At 1.4 lb and 4.06 x 3.07 x 1.18 inches it is smaller than most bench supplies are wide, so it fits in a tool bag, a field service case or a drawer. The flip screen was clearly designed for exactly that: working where you cannot crane your neck over a flat panel.
The preset groups and multiple input modes also suit field and hobby work where you move between setups. If you are working on a 3.3V or 5V rail for a microcontroller or an LED board, this covers it comfortably without dragging a 9 lb or 17.6 lb unit along.
When the FNIRSI DPS-150 is the wrong call
Do not buy it as a primary bench supply if you plan to run anything near 150W. Motors, larger LED arrays, 12V automotive circuits and multi-board bring-ups will find the ceiling quickly, and unlike the 300W units here, there is no headroom above it.
It is also the newest design with the thinnest evidence base, which matters for a tool you will trust with expensive boards. If you want a portable option with a longer track record, the 300W switching units are heavier but far better established. For anything requiring low noise, look past this one entirely.
9. NICE-POWER SPS-E3010 – The Smallest Full-Size Chassis
NICE-POWER DC Power Supply Variable 0~30V 0~10A, 3-Digits LED Display Current and Voltage Adjustable 150W Fixed with Encoder DC Bench Power Supply 15V 10A/30V 5A,Electroplating DIY etc PSU
0-30V 0-10A, 150W
Encoder press-to-select digits
10 x 18.5 x 8 cm chassis
100V-240V input
Pros
- Compact chassis at 10 x 18.5 x 8 cm and under 1 kg
- Encoder knobs let you press to select a digit and rotate to set it
- 100V-240V input works without a transformer in most regions
- Output readings reported as accurate and clean in normal use
Cons
- Cooling fan runs continuously and is noticeably noisy
- Light enough to be knocked off a bench
- One verified review found no way to switch between the two advertised ranges
The NICE-POWER SPS-E3010 is about chassis size. At 10 x 18.5 x 8 cm and under 1 kg, it is the most compact full-size unit in this list, and if your bench is measured in free space rather than capability it is the easiest to place. The encoder knobs take a press to select a digit and a turn to set it, which is a step up from potentiometers.
It covers 0-30V and 0-10A with a 150W ceiling, and the 100V-240V input means it works in most regions without a transformer. Around 79% of the 268 ratings are five stars, and reviewers treat it as a clear step up from a pile of wall adapters, praising size, encoder precision and output accuracy.
The recurring complaints are physical rather than electrical. The cooling fan runs continuously and is noticeably noisy, and the unit is light enough to be knocked off a bench, with one owner adding silicone feet to stop it sliding. There is also some plastic in the case construction next to the metal rivals here.
One more to know before you commit: a verified review reported no way to switch between the two advertised voltage and current ranges, even though the listing claims 15V/10A to 30V/5A switching. Verify the range switching on your own unit rather than taking the listing at face value.
When the NICE-POWER SPS-E3010 makes sense
It suits a small bench, a shared workspace, or anyone who travels with their tools. Under 1 kg and smaller than a paperback, it is the easiest full-size supply in this list to move between rooms, and the universal input means no transformer when your work travels across borders.
The 10A current ceiling at lower voltages is also genuinely useful for LED and general DC work where a 5A limit would be the bottleneck. Treat it as a compact workhorse rather than a precision instrument, and it will serve a hobbyist bench well.
When the NICE-POWER SPS-E3010 is the wrong call
The constant fan noise is the reason to look elsewhere if you work in a quiet room or sit near audio work. A fan that never stops is a background irritant that does not go away after the first week, and it is a design choice rather than a fault.
It is also the wrong choice for anything delicate. Plastic construction, a 150W ceiling and a review base where range switching is questioned make it a less confident tool than a metal-cased 300W unit. If the bench has room, spend the space on a unit that will grow with your projects.
10. NICE-POWER SPS-E305 – The Best Starter Encoder Unit
NICE-POWER DC Power Supply Variable, 30V 5A Adjustable Switching Regulated Power Supply with Encoder, Upgraded 3-Digits LED Display, Electroplating DIY LED Test Mini Regulated DC Bench Power Supply
0-30V 0-5A, 150W
Press-and-turn encoder knobs
100-240V universal input
FCC and CE marked
Pros
- Press-and-turn encoder knobs give accurate digit-by-digit setpoints
- Bright back-lit 3-digit display readable down to low voltages
- Weighs 1.54 lb far lighter than a laptop
- 100-240V universal input with FCC and CE certification
- Ties for the highest average rating in the lineup at 4.6
Cons
- Output accuracy degrades below roughly 0.7-0.9V per two independent testers
- Cooling fan runs constantly and is loud under load
- A few hundred mV of ripple acceptable for LED and electroplating but not low-noise analog
The NICE-POWER SPS-E305 is the pick if you spend your time on 3.3V and 5V logic rails, which is most microcontroller work. Two independent testers found the output accurate from 3.3V upward, and around 81% of the 343 ratings are five stars, tying for the highest average rating in this lineup. The bright back-lit 3-digit display resolves to 0.1V and 0.01A and stays readable at low voltages.
The press-and-turn encoder knobs replace the potentiometers found on older supplies, so you set a value digit by digit instead of hunting for it with a small knob. The unit weighs 1.54 lb, which is far lighter than a laptop, and the 100-240V universal input covers most regions. FCC and CE certification are both marked on the unit.
There is a real limit worth knowing: output accuracy degrades below roughly 0.7-0.9V according to two independent testers. That is irrelevant for 3.3V and 5V work and important if you are running a low-voltage cell or a 0.5V reference. The cooling fan also runs constantly and is loud under load, and there is a few hundred millivolts of ripple on the output.
That ripple figure is fine for LED and electroplating loads, which is what most owners use it for, but it disqualifies the unit from low-noise analog work. One verified review also reported it failing to deliver a 12V 5A load beyond about 7V and 3.2A, so do not design right up against the 5A headline rating.
When the NICE-POWER SPS-E305 makes sense
This is a first bench supply for someone whose projects live between 3.3V and 12V. Arduino, ESP32, Raspberry Pi, small sensor boards, LED drivers and general breadboard and perfboard work all sit comfortably in the accurate range, and the encoder knobs make it easy to hit an exact 3.29V or 4.02V rail.
At 1.54 lb with a 6.5 x 4 x 3.2 inch footprint it is unobtrusive on a crowded desk, and the universal input plus marked certifications make it easy to justify in a classroom or shared lab where someone will ask about safety.
When the NICE-POWER SPS-E305 is the wrong call
Below about 0.8V this is the wrong tool, with two testers documenting accuracy loss. If your work includes Li-ion cell discharge at low voltage, an adjustable buck-boost supply is a better answer than a fixed-range bench unit.
For analog and audio work the ripple rules it out, and for anything above roughly 3A sustained the 150W ceiling and the reported load shortfall become relevant. In those cases move up to a 300W unit in this list, and add the safety headroom that comes with a real current limit.
Buying Guide: Linear vs Switching and What Actually Matters
Linear vs switching: which noise matters to you
A linear supply steps mains voltage down with a transformer, then smooths and regulates it with a linear pass stage. The output is very quiet, which is what you want for audio, RF and low-level analog measurement, but the regulator burns the difference between input and output voltage as heat, so those units are physically large and inefficient.
A switching supply uses pulse width modulation and a small transformer, which makes it far more efficient, smaller and lighter. The cost is high-frequency noise on the output. That noise is irrelevant for a microcontroller or an LED driver, and it can degrade sensitive analog work or leak into a ham radio receiver. If you have never noticed a problem with switching noise, you will not miss it in a linear unit either.
Forum consensus splits cleanly along those lines. A common view on the audio DIY forums is that a simple linear supply with analog meters beats a complex programmable switchmode unit because there is much less that can go wrong. In this list, the Korad KD3005D and the Tekpower TP3005T cover the linear side; the Jesverty, WANPTEK, Kungber, Hanmatek, FNIRSI and both NICE-POWER units cover the switching side.
How much voltage and current you actually need
The hobbyist standard is 0-30V and 5A, and most people who buy a 60V/10A supply never use the extra. The recurring forum guidance is that 30V with 2A is enough for a great deal of work, with 5A giving comfortable headroom. Almost every microcontroller, sensor, small motor driver and audio preamp project in the list above lives inside that envelope.
Move up to a 300W switching unit when you drive motors, high-power LED arrays, 12V accessories, or multiple boards at once. Move up in voltage only when you genuinely need it, such as higher rail testing or series operation on a multi-output unit. If you need more than 30V and more than 5A at the same time, the right move is a 60V/10A class supply rather than two outputs stacked without understanding the isolation.
For 12V automotive bench testing specifically, a 0-30V unit handles 12V fine. What matters more there is current headroom for accessories and a real current limit, since an automotive circuit can pull far more than a bench supply’s rating and you want the protection to act before the wiring does.
Control style, current limit and safety features
Current limiting is the feature that matters most, and every decent supply here does it. Setting a current limit is not a limitation on what you can power; it is a fuse you can adjust. Set it slightly above what your circuit should draw, and if the limit engages, something downstream is wrong and your board survives.
Look next for over-current, over-voltage, short circuit and thermal protection. Where a supply offers a dedicated output enable switch, that is a real safety advantage: you can change setpoints with the output off, which is exactly the habit that prevents damage. A keypad lock is a quieter version of the same idea, and it is worth having.
Control style comes down to how you work. Coarse and fine encoder knobs suit anyone setting decimal values all day. A single press-and-turn encoder is fine if you adjust occasionally. Older button-driven panels are more tedious but entirely workable. What you want to avoid is a control scheme that resets on reboot and gives you no memory of your last setting.
Which brand tier is right for your bench
For a good brand of bench power supply, the answer depends on the tier rather than one universal name. At the value end, WANPTEK and NICE-POWER build accurate, compact units with modern encoders. In the middle, Hanmatek, Jesverty, Kungber and FNIRSI cover compact switching work, and Tekpower covers linear at a classroom-friendly size. Korad is the reference hobbyist linear brand. Siglent is the prosumer programmable tier, and Keysight, Agilent and HP are the lab-grade tier where used instruments are a common route.
Used lab-grade deserves its own mention because it comes up constantly in electronics forums. The most repeated recommendation on r/arduino and r/AskElectronics is to look at a used HP, Agilent or Keysight unit, or a Power Designs, Sorensen or Thurlby Thandar, rather than a new budget supply. A used lab instrument is a legitimate way to get accurate, serviceable hardware with real protection circuits, and EEVblog members repeatedly recommend second-hand Agilent. The tradeoff is age, unknown calibration history, and no warranty, so verify the output before you trust it.
For the most reliable brand overall, anchor that in verifiable things rather than reputation: warranty length, the presence of real over-current and over-voltage protection, build quality and whether the manufacturer will still service the unit. A three-year warranty is a meaningful signal against the 12-month norm. And before dismissing it entirely, a converted ATX computer power supply is a legitimate weekend project, though it has no current limiting in the sense we mean here and no protection to speak of. If PC power supplies are your interest, we have covered those separately in our guide to power supplies for gaming PCs.
Frequently Asked Questions
What is a good brand of bench power supply?
Korad is the reference hobbyist linear brand, Siglent and Rigol cover the prosumer programmable tier, and Keysight, Agilent and HP sit at lab grade where used instruments are common. Below that, WANPTEK, Hanmatek and NICE-POWER build accurate budget units. Pick by tier and workload rather than by brand alone.
Which brand power supply is best?
It depends entirely on your tier. There is no universal winner. For low-noise analog work a linear brand like Korad is right, for multi-rail bench work Siglent is the better answer, and for general microcontroller and LED work a budget switching brand like WANPTEK or Hanmatek covers it. Match the supply to the circuit, not to a logo.
Which brand of bench power supply is best on Amazon?
Wanptek, Hanmatek, Korad and Rigol are the reliable names worth shortlisting, and all of them appear in this roundup. When you look at unbranded listings, check for stated over-current and over-voltage protection, verify the setpoint against a meter when it arrives, and expect the supplied test leads to be the weakest part.
What is the most reliable power supply brand?
Reliability is easier to judge from attributes than from reputation. Look for a long warranty, genuine over-current and over-voltage protection rather than a marketing claim, a metal enclosure, and a manufacturer that will still service the unit. A three-year warranty, as on the Siglent SPD3303X-E, is a clear signal against the 12-month norm.
What is the best benchtop power supply for hobbyists?
The Jesverty SPS-3010 is our pick for most hobbyists, giving 0-30V, 0-10A and 300W in a 2.4 lb tower with a four-digit display and automatic CV/CC handover. If noise matters more than size, the Korad KD3005D is the linear alternative, and if you work with batteries the Kungber SPS3010B adds a charging mode.
What is the best 12 volt power supply for bench testing?
Any 0-30V unit in this roundup handles 12V comfortably, so voltage range is rarely the constraint. For automotive work, prioritise current headroom for accessories and a dependable current limit instead, so protection acts before your wiring does. A fixed high-current 12V supply is the alternative if you only ever test one rail.
Do I need 30V 5A or 60V 10A?
Most hobbyist work fits inside 30V and 5A, and forum guidance commonly puts 2A as enough for a great deal of it. Move to 60V/10A only if you genuinely drive motors, high-power LED arrays or 12V accessories at the same time. Over-buying costs you bench space and heat for capability you may never use.
How do I use a bench power supply safely?
Set the current limit slightly above what your circuit should draw, set the voltage with the output disabled if the supply has an output switch, and connect leads before energising. Start at a low voltage and bring it up while watching current. Never leave a supply capable of pushing full current into a short or a miswired board.
Conclusion
The best bench power supplies in 2026 come down to your bench and your circuits, not to a single winner. The Jesverty SPS-3010 is the best overall pick for most people, giving a 300W switching supply with a proper four-digit readout in a 2.4 lb tower. For battery work the Kungber SPS3010B adds a charging mode that counts amp-hours, and for precise decimal setpoints the WANPTEK DPS3010U leads on control ergonomics.
Beyond that, the decision gets specific. Buy the Korad KD3005D when low noise is the priority, the Hanmatek HM310 when a physical output enable switch matters, the FNIRSI DPS-150 when the supply has to travel, and the Siglent SPD3303X-E when you genuinely need three isolated outputs. Check the setpoint against a meter when your supply arrives, set the current limit before you power anything, and you will not have to think about it again for years.