So dude earlier sounded like he was talking about class d vs DE. Which really is a topology conversation right? The only way a amp is going to "color" the sound is in distortion figures right?
The only two amps where you can hear a noticeable difference I have found is SET tube vs solid state. And that is debatable too.
Yup, the amplifier challenge includes any amp class, even class D. This means that any "good" amp should sound the same, regardless of topology.