Do they sound "bright" or "warm"? (I'm looking for the WARMER sounding amp I can find).

These are the options I have in view at the moment (all them are used, in great condition):

- Arcam A38
- Krell 400XI
- Classé CAP-101
- Marantz PM15S1
- Electrocompaniet PI 2
- Vincent SV226 MkII & SV236 MkII

My favorite genres are ROCK, POP & FUSION and my speakers are Dynaudio Contour 3.0 (floorstanding), so I need one that can be refined and powerful at the same time.

Thanks