I have never listen to any Sherbourn amps so I don't know what they add or subtract from the big picture. You could do what many of us have done, add a two channel pre: passive or active with pass through for two channel. I don't know for sure, but I would think this may sound better for two channel sound.
Question on 2 channel vs 5 channel amps ?
I am currently running a sherbourn 5210 5 channel 200x 5 amp, pushing a pair of aerial 7B's , cc3 center anf sr3 rears, the amp works fine with these speakers, I am considering getting a seperate 2 channel amp for the 7B's and letting the sherbourn do the center and surrounds, I am considering the classe 301, krell kav 250 and the rowland 112, my question is, will I hear a signifigant improvement in 2 channel, or would it not be worth the investment, thanks all