Received an AV grade switching power supply wall wart with a network switch and wondered if this is any good. Is a linear supply better. Heard switching power supply's are noisy.
Problem with linear power is that the circuit is always on and this creates noise. A switch power is fine if the filtering for high frequencies is done well and should not be a problem.
So linear power for switches it's not a good idea.
Let's go with mainly marketing BS. Bet they don't provide specs. Any quality PS has validated FCC class B test results. Most critical thing in audio is ensuring the switching frequency stays out of the audio frequencies and preferably high to make filtering easier.
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