Are cheap power supplies any good for audio testing? In this video I compare the Hanmatek HM310 power supply to an HP 6643A. I measure the load regulation, step response, and how the power supply performs when powering an audiophile power amplifier. I also torture test the supply to see if we get what we pay for with this $80 power supply.

Hanmatek HM310: https://www.amazon.com/AdjustableDis...