With apologies for resurrecting an old thread, may I ask a couple of follow-up questions? Same issue as the OP.
The PM6007 manual says, on digital audio input: 'Do not input non-PCM signals, such as Dolby Digital, DTS and AAC. ' - Is this something I'd need to worry about when running audio from a laptop USB to the amp's optical input (via a converter)?
And if going the other route of USB to RCA, which port is best to use on the amp? There is no 'Aux' RCA port like there was on older models, just CD/Network/Tuner. I guess 'Network' , but does it matter?
Many thanks!