The Crown and the A-100 have integrated volume controls, so they would be good choices right now. The Crown has lots more power, the A-100 has outputs to easily connect a sub.
The counter to both of those points is that you probably need very little power and you can attach a sub to a 2.0 system in many ways.
They are both great, I have the A-100 and have used Crown. The Crown uses D amps, toroidal isn't an issue, really. They are pro amps, quality is high.
Actually, I think the Crown also has pass-thru that could go to a sub.
Last edited by Spiky; 12-28-2014 at 08:17 PM.