jpdylon said:If you were only using discrete sources like a 4 channel R2R. However if you wanted to play anything encoded in CD-4, QS, SQ, RM, etc you would be out of luck.
The adapters were a neat idea for those who didn't want to spend the bucks on a quad receiver, but in the end, its better to just by a sansui QRX receiver than to fiddle with multiple receivers, adapters, etc.