The C1 needs far more power than the Luxman class A can provide to perform what they are capable of. Maybe the class A/B design Luxmans would work for you. When I had my C1's I used a Simaudio Evolution series I-7 integrated. Sounded superb. I have had a couple of Luxmans in the past, class A and classA/B. Although the are finely crafted and full featured amps, I personally found them too thin and forward to my taste.