Razen: 1st, Wow, excellent system! (if I may use the word). As to yr question: IMO (and experience) you can drive ALL of the reasonably sensitive speakers with yr CAT combo -- the list is, believe me, long enough for a PhD. Anything that's phase correct (or more or less), reasonably even, & fast -- to do justice to yr electronics. What music do you listen to, and how do you like yr reproduction to sound -- not least, what speakers are you using now & why are they lacking...?
Among the brands (purportedly) used by Mr CAT &/or his dealers are: A-Physics, Symphonic-Line, Genesis, Quads, Avalon, Soundlab, the Bella Luna model (manufacturer?), Thiels (a variety, it seems), Sonus Faber... many others can apply. Take your pick, your only restriction is the room size!
Among the brands (purportedly) used by Mr CAT &/or his dealers are: A-Physics, Symphonic-Line, Genesis, Quads, Avalon, Soundlab, the Bella Luna model (manufacturer?), Thiels (a variety, it seems), Sonus Faber... many others can apply. Take your pick, your only restriction is the room size!