Which of these integrated amps are warm sounding?

My system consists of an Atoll IN100, Totem Hawk speakers, a Vecteur cd player and a Cambridge Audio CXN streamer. My speakers are hard to drive.  I am happy with the sound but would like something warmer and more detailed.
These are the amps that I am able to demo in my area.

Atoll IN300
Cary SI300 2D
Hegel H190
Unison Research Hybrid Due 

I do not want to buy used on Audiogon as I want to demo these units. Also I do not want to go to tubes.

If anyone has experience with these amps or amps from the same manufacturer I would appreciate your feedback including what you think the house sound is for these amps.

Thanks