I have the reference 75 and auditioned it on wilson Duettes, a different speaker I know. I compared it with a Ref 110, upgraded with KT120 tubes and I found the Ref 75 significantly better and certainly powerful enough for the speakers.
When I auditioned the amp, it was on the recommendation of a review in a UK magazine. The reviewer bought the amp himself and commented that 75 to 100 watts has always seemed to be the area that ARC produces great amps. Having heard the ref 110 and 150, I think he is right, the ARC ref 75 seems exceptional, even compared to the 110 and 150.
When I auditioned the amp, it was on the recommendation of a review in a UK magazine. The reviewer bought the amp himself and commented that 75 to 100 watts has always seemed to be the area that ARC produces great amps. Having heard the ref 110 and 150, I think he is right, the ARC ref 75 seems exceptional, even compared to the 110 and 150.