I use the 640c in a second system consisting of a Nad c325bee & Quad 21L2s. It recently stopped reading discs. I was told by the US distributor that the repair should be no more than $150. In your opinion is it worth the fix.
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.