Amp(s) question(s)

Hi all,

I'm new to this place, but it looks nice !
I'm an amateur player, and finally ended to get a high end luthier
archtop whith a powerful, beautiful acoustic sound, equipped with a
floating neck pick-up.

I'm looking for a good amp like AER, Schertel or Acoustic Image. This
will be for private use only, or small gigs (duos and trios), so
monster power is not required.

Do these amps sound good at low volume ?
Contra R / Clarus R : any difference in sound ?
Acoustic sound is obviously great, is it possible to get mellow
"classic" sounds ?
I read that some of you use these amps, your opinions are welcome.

All these questions because I presently cannot test these amps by
myself.

.