Can an amplifier generate power line noise?

Propeller Head Plaza

Technical and scientific discussion of amps, cables and other topics.

Hi,
I am wondering whether my amplifier can generate sufficient power line noise to degrade the performance of my cd player. I am concerned that the switching power supplies can send harmonics right through the high-bandwidth toroidal transformer back into the power line, and hence into my cd player which is plugged into the same wall outlet.
When I isolate the cd player through a OneAC isolation transformer, then the sound quality (background noise/soundstage/trebles) is much improved. The improvement is not subtle.
A separate question:
I tried doing an experiment by plugging the amplifier into the OneAC and the cd player into the wall, but instead I just get a much warmer and perhaps less accurate sound. Could this be because the engineers fine-tuned the frequency response of the amp's power supply, and placing that in series with an arbitrary inductance in the OneAC screws that all up? The 60W amplifier has a 4 Amp input fuse, so the 7 Amp OneAC should be able to deliver sufficient current.
Thanks in advance!

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Topic - Can an amplifier generate power line noise? - yakyak 11:18:24 09/16/04 (2)

Does your amp have a linear or switching PS? - Commuteman 16:12:44 09/16/04 (1)

Re: Does your amp have a linear or switching PS? - yakyak 22:01:29 09/17/04 (0)

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