I second the suggestion to look at ARC amps (although I am sure many others would also work fine). I have used an ARC VT 100 mk III with the Ref 3, and also a VTL ST-150 (not an ARC amp). Both worked well, but the VT 100 was a better match, and has balanced inputs, which are a plus.
The VT 100 mk III shows up regularly here on Audiogon.
The VT 100 mk III shows up regularly here on Audiogon.