Audio Research 150M Modular amp.

Has anybody used this amp? if so, what are your thoughts...this will be for my center channel and a pair of mains will be driven with Ref 210's.

Jon, I have the 150M with (4) modules, bridged so that it
operates as a stereo amp. Use an Audio Research SP-16 Preamp. Have old Crown hybrid electrostatic speakers. Sounds great. Only comment is that it becomes fairly warm to the touch, whether you're playing music or not(when it's turned on).