Korad KD3005D vs OWON SPE3051

Last updated: November 9, 2026

The OWON SPE3051 is the better bench power supply overall, rated 3.2 to 2.8. The OWON SPE3051 leads on PC control. The Korad KD3005D wins on output quality. The Korad KD3005D costs $10 less ($109.99 vs $119.99).

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.

Korad KD3005D vs OWON SPE3051

Which should you buy?

Scores side by side

Each factor is scored 0-100 against the same fixed reference points for every single output bench power supply; a clear win is highlighted. How we rank explains each one.

Factor weightOWON SPE3051Korad KD3005D
Overall rating3.2/52.8/5
Value 25%52 $0.80 per watt ($119.99, 150 W rated)55 $0.73 per watt ($109.99, 150 W from the channel ratings)
Output quality 20%45 3 mVrms ripple and noise55 2 mVrms ripple and noise
Resolution 15%50 10 mV / 1 mA setting resolution50 10 mV / 1 mA setting resolution
PC control 15%80 USB with SCPI0 no PC interface
Protection & features 10%80 over-voltage protection, over-current protection, stored setups50 protection and features not published (neutral score used)
Warranty 15%0 warranty not published, scored as none0 warranty not published, scored as none

Specifications

OWON SPE3051Korad KD3005D
Output
TypePower supplyPower supply
RegulationSwitchingLinear
Channels11
Channel ratings30 V/5 A30 V/5 A
Max voltage30 V30 V
Max current5 A5 A
Rated power150 W150 W (channels added)
Ripple and noise3 mVrms / 30 mVp-p2 mVrms
Precision
Setting resolution10 mV / 1 mA10 mV / 1 mA
Readback resolution10 mV / 1 mA10 mV / 1 mA
Control
PC interfacesUSBNone
SCPIYes-
Stored setups4-
Over-voltage protectionYes-
Over-current protectionYes-
Build
Weight3.3 lb9.4 lb

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