if you want lush, i.e., euphonically colored amplifiers, consider the older conrad johnson amps, such as the mv 125.
Valve Amplifier suited for my system
I own Living Voice IBR-X speakers of 94db sensitivity,Resolution Audio Opus 21 CD plaver my system sounds very good,I wish to buy tube amp with a minimum output of 15watts per channel,I like resolving delicate and lush sound which amp from Shindo,Wavac,Art Audio,Leben,Almarro, and Audio Note or any other make will match with my system