On 27/01/2012 22:37, Bob Blick wrote:
> Since the signal source and the amplifier share the same DC and audio
> ground, you would need to isolate the audio. Good quality audio coupling
> transformers are expensive, so you might do better coupling them with a
> differential amplifier (you can make one with an opamp). But getting it
> right can be fussy unless you've done it before. That was why I
> suggested powering the amplifier off its own dedicated supply.
>
> Best regards,
>
> Bob
>
Wouldnt one of these between the motherboard and the amp do the job?

http://uk.rs-online.com/web/p/audio-transformer/2106481/

Regards
Andrew
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