I second the opinion from Jall!! I'm using the Manley Designer Ref 240's ($3500`$4500 used) and they are a revelation. My speakers are Avalon Eclipse's which are difficult to drive for reasons other than impedance (they only dip to 5 ohms, but the crossover's used by Avalon are fairly complex). I've previously used a Levinson 27.5, McCormack DNA2 LAE with Rev. A upgrade, and Jadis Defy7 MkIV with the Avalons. Even though my previous amps were very good amps by most standards, I'm finally hearing ALL the magic!!! Very sweet midrange without sounding "tubey", extended highs, deep bass, but the most shocking thing about the Manley's is that they are simultaneously incredibly transparent and clean while providing the rich textures we tube-heads crave. Try them, you will not be disappointed. Also, Eveanna Manley and the rest of the people at Manley are great to deal with. True class act! Greysquirrel