I own the PL model 7 mono amps. Because the speakers in my current (pardon the pun) rotation need more juice than these provide, I'm generally running an ARC VT 130 SE. However, with appropriately matched speakers, the model 7s sound very much like (though certainly not identical to)the much more expensive ARC amp. They also auto-bias and allow oodles of tube rolling options. Fit n finish is top notch. IMHO, the PL 7 monos represent excellent value.
Marty
Marty