General Purpose supply for audio

Thread Starter

michael bore

Joined Jan 17, 2018
Would it be a good idea to use a regular off the shelf SMPS used for LED lights with some added filtering for an audio amplifier or would that be too noisy without the added help of a linear regulator? I can't get a hold of any power transformers that would be affordable for me and I know that supplies such as PC power supplies are too noisy without a lot of added filtering from experience but before I dive into the idea is there anything else I need to know about cheap Chinese SMPS' used for LED lights?


Joined Mar 14, 2008
Depends a lot on their switching frequency.
You would want that to greater than 20kHz to avoid a noise in the audio band.
But don't those designed for LED lights put out a regulated current, not voltage?