A linear supply regulates with a transformer and pass transistors instead of high-frequency switching, so its output is far quieter. That makes it the better choice for audio, RF, sensor and other analog circuits. The trade-off is weight and less power for the money.
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Best Linear Bench Power Supplies: Single output
- Siglent SPD1305X#1 of 7Full review
A quiet, precise single-output linear supply for electronics benches that want PC control and remote sense. Less power per dollar than a switcher, but far cleaner output.
Amazon $328$32830 V / 5 A150 W1 - Siglent SPD1168X#2 of 7Full review
The low-voltage, higher-current sibling of the SPD1305X, for 12 V and 5 V work that needs clean, precise power.
Amazon $305$30516 V / 8 A128 W1 - Tekpower TP3005P#3 of 7Full review
A programmable linear 30 V, 5 A supply for hobbyists who want PC control without paying lab-brand prices.
Amazon $129.99$129.9930 V / 5 A150 W1 - Korad KA3005P#4 of 7Full review
A low-cost programmable linear supply for hobby and repair benches that want PC control on a budget.
Amazon $155$15530 V / 5 A150 W1 - Korad KD6005D#5 of 7Full review
A 60 V linear supply for people who need more voltage than a 30 V bench unit without the noise of a switcher.
Amazon $204.99$204.9960 V / 5 A300 W1 - Korad KD3005D#6 of 7Full review
A basic linear 30 V, 5 A bench supply for hobby electronics when PC control is not needed.
Amazon $109.99$109.9930 V / 5 A150 W1 - Tekpower TP3005T#7 of 7Full review
A simple linear 30 V, 5 A supply for beginners and repair benches on a tight budget.
Amazon $89.99$89.9930 V / 5 A150 W1
Best Linear Bench Power Supplies: Multi-output
- Rigol DP832#1 of 6Full review
A popular, quiet triple-output linear supply for electronics labs; the default pick for mixed analog and digital work.
Amazon $449$44930 V / 3 A195 W3 - Rigol DP932E#2 of 6Full review
A newer Rigol triple-output linear supply with isolated channels and LAN built in, for labs that script tests.
Amazon $499$49930 V / 3 A198 W3 - Siglent SPD3303X-E#3 of 6Full review
A quiet triple-output linear supply for electronics labs that power analog and logic rails at once.
Amazon $459$45932 V / 3.2 A220 W3 - Siglent SPD3303C#4 of 6Full review
The lower-cost triple-output Siglent, for benches that want three linear rails and USB control.
Amazon $344$34432 V / 3.2 A220 W3 - Tekpower TP3003D-3#5 of 6Full review
The cheapest way to get three linear rails on a hobby bench, if PC control is not needed.
Amazon $179.99$179.9930 V / 3 A195 W3 - GW Instek GPD-3303D#6 of 6Full review
A triple-output linear supply from a lab brand, outclassed here on price and setting resolution.
Amazon $719$71930 V / 3 A195 W3
