Massimo,
Sorry I can’t comment on the Bel Canto amps other than to say I was convinced based on reviews to give it a try if I thought it would be a good match with the Sound Labs (I did not have them in my system nor have I heard them in another system). Let me know if you’re interested and I will PM you a link with the ad. The seller is in Michigan (not sure where you’re located?)
Evan