I have owned a pair of MA 1s for 6 years now and still consider them to be my last amps. I do believe they are best mated with 8ohm spks. They are the same circuit as the MK2 and sound the same. I run Proac3.5's and it is a great match.mike
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)?