The X600 was powering my 1 ohm Apogee Scintillas. I had used the X-150 on Apogee Duetta, and liked the sound very much, at the time. I figured, if the X600 can't be the best amp for the Scintillas, what could? We are talking about a lot of power. I still had my 4 ohm Duettas, when the X600 arrived. The sound was warmer, and fuller with the X600. A reviewer friend of mine liked the X150 better.
A fellow Scintilla owner told me he had tried an ICE powered eAR amp on his speakers, and it was the best sound he had ever heard. I didn't believe him at first. How could a little cold amp sound better than two behemoths with Supersymmetry? I took a chance anyway, and found the fellow had been too modest. The eAR gave better bass, and much clearer upper octaves.
When a fellow Scintilla owner, and talented amp builder came out with his own ICE powered amp, I didn't hesitate. I have the H2O Signature monos. These are the best. They sell for $5,500 direct. They are not in a pretty box, but they will power anything with the most stunningly real sound I have ever heard. check out the reviews at Agon, the Asylum, and at the ICEH2O site.
