You can pretty much use any of them. The older Quad ESL 63's
were often paired with c-j tube mono amps. I don't know from personal experience but many here seem to like tubes and c-j's with Spendors as well. You might want to contact c-j. They have a very good reputation for customer service. I use c-j solid state stuff. c-j's solid state gear is quite tube friendly. Not that I think you'll need it, but, good luck.
were often paired with c-j tube mono amps. I don't know from personal experience but many here seem to like tubes and c-j's with Spendors as well. You might want to contact c-j. They have a very good reputation for customer service. I use c-j solid state stuff. c-j's solid state gear is quite tube friendly. Not that I think you'll need it, but, good luck.