Siglent SPD3303X-E
#3 in Multi-outputFull review
A quiet triple-output linear supply for electronics labs that power analog and logic rails at once.
Amazon $459$459
32 V / 3.2 A220 W3
3.4/5
The lower-cost triple-output Siglent, for benches that want three linear rails and USB control.
- 32 V / 3.2 AOutput
- 220 WPower
- LinearType
- USBPC control
Check price at Amazon$344
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Three outputs for under $350
- USB control with SCPI commands
- Three-year warranty
Cons
- No LAN port
- Heavy at 16.5 lb
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Specifications
| Model number | SPD3303C |
|---|---|
| Output | |
| Type | Power supply |
| Regulation | Linear |
| Channels | 3 |
| Channel ratings | 32 V/3.2 A, 32 V/3.2 A, 2.5/3.3/5 V/3.2 A |
| Max voltage | 32 V |
| Max current | 3.2 A |
| Rated power | 220 W |
| Ripple and noise | 1 mVrms |
| Precision | |
| Setting resolution | 10 mV / 10 mA |
| Readback resolution | 10 mV / 10 mA |
| Control | |
| PC interfaces | USB |
| SCPI | Yes |
| Stored setups | 5 |
| Build | |
| Weight | 16.5 lb |
| Warranty | 3 years |
Alternatives in this type
GW Instek GPP-4323
#4 in Multi-outputFull review
A four-channel programmable supply for labs that need many precise rails and automated tests in one unit.
Amazon $897.86$897.86
32 V / 3 A212 W4
NICE-POWER SPS3010-2KD Dual 30V 10A
#6 in Multi-outputFull review
A cheap dual switcher for projects that need two high-current rails, or 60 V or 20 A from one box.
Amazon $199.99$199.99
30 V / 10 A600 W2
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