Hello, I am currently running a pair of Atma-Sphere MA-1 MKII's on my A-1's with quite good results, I sometimes wish I had a little more power but the Ma-2's are out of the question as I live in Az. Haven't heard the Graaf products but when it comes to OTL's I don't think anyone can beat Ralph Karsten's designs. The Atma-Spheres were made for these speakers. If you can live with the power of the 1's or the heat of the 2's, go for it. You also asked about the Viva's, I just ordered a pair of the new 845 tube type. I have some reservations but some well respected people say these are the way to go. I'll be happy to report what I find. Have you got any info on the Wolcotts? I just found out about these after I committed to the Viva's. Let me Know what you find out and lets stay in touch as it seems we're both looking for the right amps to drive the worlds best speakers. Thanks! nmosher@yahoo.com
