Gryphon Callisto 2100

I had one for about 2 years, loved it, and upgraded to a Callisto 2200. Since I believe it has been discontinued, I would assume that you are looking at used ones. At about $2000 to $3000, it is a much better amp than some new Arcam, Musical Fidelity, Creek integrated I have tried. In general, it is warm, detailed, and gets closer to real/right sound.

I would not agree with Wenrhuang that Callisto 2100 is warm sounding amp at all. That amp (like most Gryphons I have heard) flavor revolve around pristine clarity, fine sharp details, speed, very extended top/bottom frequencies,and great PRAT. But it is a very fine amp nonetheless.

Avoid!!!!!!!!!

Many pieces Callisto 2100 showed reliability problems - some poor cooling arrangements cause bad problems, damages etc. No personal experience - just heard from some audio forum buddies worldwide.

If can afford, go to new Diablo integrated.

I have been using Gryphon integrated for 3 years, never had any problem. I know that there is difference in software version from 1.1 to 1.4, the newer version runs cooler than earlier ones, probably to address reliability issue. The older version can be upgraded by downloading new software, I think.

In general, what I heard is that the Gryphon integrated amps are fairly reliable, which was my experience too. I did hear that its class A amps runs really hot, and may have reliability issue in not well ventilated set up. However, I had no personal experience with its class A amps at all.