I have a pair of the odyssey stratos special edition mono blocks stable down to two ohms, I run them with a tubed preamp and Kef 107.2s I love them! only paid $1,200.00 for the pair on C.L they come with a 20 year transferable warranty :) I also own a Adcom GFA 555-11 amp that does a great job as well only paid $350.00 for the Adcom.