Check the archives, there have been a number of threads in the pastfew years on this, with a number of SC V owners chiming in. I seem to recall the Aloia amps being favored by a number of users. My favorites that my dealer used to use were the VTLs mentioned above, the VAC 140 Renaissance monoblocks and the BAT VK60 monoblocks. I always liked the sound of tubes with Dunlavys, even if it meant losing the bass control you'd get from solid state.