I owned the CAT JL2 and subsequently,the JL2 reference Signature. I compared it with the Music Reference RM9 Special, which was better in every respect. I sold the JL2 and bought the special, which Roger Mojesky sells directly for $8,000 and of which he only made 20. I consider myself very lucky to have found this gem. I've listened to more music in the last 6 months then in the last 5 years because listening has become a sheer joy, pure pleaseure. Whereas every amp I've ever owned let me listen to the music the RM9 Special let's me feel it. I plan to write a full review of this amp soon. Let me just say, I owned the Tenor before I bought the CAT. The CAT destroyed the Tenor. Similarly,the RM9 killed the CAT.