Sounds like a very good system coming together with these choices. One of my friends has Mtma-sphere MA2 MKIIs on Sound Labs. His system sounds wonderful. The Atma-sphere's are the best sounding, by far, amps his has ever in the system. I even tried a home demo on my Wilson system. These amps sounded fast,open, detail, but yet very musical. They had some advantages/distadvantages over my present amps. I can really recommend them just on sound quality alone. Personally, I don't like their 1970ish industrial and massive looks. Graaf are the clear winner on aesthetics. I would believe the Atma-sphere were sound better than the Graaf on the Sound Labs because of their ability because of their to handle SL's difficult current loads. A home demo is a must at these prices levels. Reviews on both are in the magazines. Let us know what happens and good luck! Gerrym5
