A cheap dual switcher for projects that need two high-current rails, or 60 V or 20 A from one box.
Amazon $199.99The NICE-POWER SPS3010-2KD Dual 30V 10A is the better bench power supply overall, rated 2.9 to 2.5. The NICE-POWER SPS3010-2KD Dual 30V 10A leads on resolution and value. The Tekpower TP3003D-3 costs $20 less ($179.99 vs $199.99).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
The cheapest way to get three linear rails on a hobby bench, if PC control is not needed.
Amazon $179.99Which should you buy?
- Choose the NICE-POWER SPS3010-2KD Dual 30V 10A for resolution (10 mV / 1 mA readback resolution vs 100 mV / 10 mA readback resolution) and value ($0.33 per watt ($199.99, 600 W rated) vs $0.92 per watt ($179.99, 195 W from the channel ratings)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every multi-output bench power supply; a clear win is highlighted. How we rank explains each one.
| Factor weight | NICE-POWER SPS3010-2KD Dual 30V 10A | Tekpower TP3003D-3 |
|---|---|---|
| Overall rating | 2.9/5 | 2.5/5 |
| Value 25% | 77 $0.33 per watt ($199.99, 600 W rated) | 48 $0.92 per watt ($179.99, 195 W from the channel ratings) |
| Output quality 20% | 0 ripple and noise not published, scored as the worst | 71 1 mVrms ripple and noise |
| Resolution 15% | 50 10 mV / 1 mA readback resolution | 0 100 mV / 10 mA readback resolution |
| PC control 15% | 50 PC control not published (neutral score used) | 0 no PC interface |
| Protection & features 10% | 50 protection and features not published (neutral score used) | 30 over-current protection |
| Warranty 15% | 0 warranty not published, scored as none | 0 1-year warranty |
Specifications
| NICE-POWER SPS3010-2KD Dual 30V 10A | Tekpower TP3003D-3 | |
|---|---|---|
| Output | ||
| Type | Power supply | Power supply |
| Regulation | Switching | Linear |
| Channels | 2 | 3 |
| Channel ratings | 30 V/10 A, 30 V/10 A | 30 V/3 A, 30 V/3 A, 5 V/3 A |
| Max voltage | 30 V | 30 V |
| Max current | 10 A | 3 A |
| Rated power | 600 W | 195 W (channels added) |
| Ripple and noise | - | 1 mVrms / 20 mVp-p |
| Precision | ||
| Readback resolution | 10 mV / 1 mA | 100 mV / 10 mA |
| Control | ||
| PC interfaces | - | None |
| Over-current protection | - | Yes |
| Build | ||
| Weight | 4.4 lb | 28 lb |
| Warranty | - | 1 year |
