My pair of MG 3.7i are being driven by an AVA Fet Valve 600R, at $3199, which has the hybrid technology of both high current MOSFETs and tubes for the voltage amplification, a step up from what yogiboy referred to above and it is the perfect complement for them. The attention to superb power supply design given to it pays ample dividends. Have owned nothing but Magnepans since T-1A days, suggest you at least try to audition one if you can.
