Poor sound quality and distortion

Ever since getting my 27" Imac I've notice the sound quality is poor and bass sounds distort quite a bit and it happens with the computer's speaker, headphones, and streamed audio over the network.
Any ideas on what might be causing this? Sound card or itunes?
Thanks,
Terry

Sounds like an audio circuit issue on your logic board--especially if it does it using headphones too. That almost eliminated the speakers. I would contact Apple and get it looked at.
Dave M.
 MacOSG: An Apple User Group  iTunes: MacOSG Podcast  Follow us on Twitter: MacOSG

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