Your questions are specific enough that you should call Ralph at Atmasphere. He's a nice guy and will not mind helping you. Plus, there is no question as to the reliability of the answers you will get.
651-690-2246
651-690-2246
Atmasphere MA-1: mk1 vs. mk2?
There are currently a few Atmasphere MA-1 mk1 amps up for sale. Since they look quite different from the mk2, I wondered, how much of a difference is there between these two versions? Do they sound quite similar? Any reliability issues with the mk1? Is it possible/necessary to upgrade parts in the mk1? And do they mind any slight dips down to 3 Ohms in speaker impedance (Audio Physic Virgos)?