I recently upgraded to a Harman Kardon 520 and I thought I might like to listen to some cd's, the manual said that the optical connection would be best since the Harman has 192bit Dac's. The manual is WRONG! If I hook up my dvd player via the analog out, it sounds great, much warmer. Stereo through the optical sounded like crap, I couldn't even bring myself to listen to it, what gives??? WHy is this? THis also begs the question, will dd/dts sound better if routed from the analog outs of the dvd player and thus bypassing the digital connection altogether????