I've personally not liked the 'CD to amp' approach in those setups I've tried. If you don't need gain I'd suggest the Decware ZSLA-1 linestage(6922 or 6N1P) for $475 new (with 30 day trial). Only down side is that it takes 4-6 weeks to have one built.
www.decware.com/linestage/zp1.htm
www.decware.com/linestage/zp1.htm