RCA/balanced converters are availble even at Radio Sgack and RCA/LCR cabels are availale from Monoprice. If your intrested in Balanced inputs to retain a fully balanced sound chain, however, I don't expect either will meet your needs. I've never seen much difference in balanced and unbalanced connections , except far long cable runs.
_________________________
HT: 990/770 Oppo BD83SE Pioneer Elite DV-47A Magnavox HDMR513h DVR/DVD-R Sony DVD megachangers-2 Sony CD megachangers-2 Monster power centers-2 Sony 48" rear projection SDTV Roku video player JVC AL-A158 Turntable Polk RT-2000s,CS-650,XS-650s,RT80s LFM-1EX Hsu VTF-1 12" Velodyne
Family room: OPPO 970 Sony 32" direct view HDTV Denon 3801 Rolk RMs