I am enjoying my M22ti with a pair of Antique Sound Lab Wave 8 tube monoblocks - they sell for about $375 a pair. They put out about 8 to 10 watts, and work very well with the M22ti because they are efficient speakers. My listening room is 20 X 14 X 8 and their is plenty of volume - unless you plan on holding a rave, I'd recommend ASL Wave 8s - Chr3is