Check out www.headphone.com, they are the designers and builders of a very good line of headphone amps. I have their Cosmic, which I use with Senn 600's when traveling. When home, I have their Base Station 1, which is a seperate power source for the Cosmic (not a wall wart). That combination, is the best I have heard (can't comment on the electrostats, I have not heard them).
They also sell and rate many lines of headphones including Senn's, Grado, Stax, etc. The staff are also easy to talk to, very helpfull.
Dave
They also sell and rate many lines of headphones including Senn's, Grado, Stax, etc. The staff are also easy to talk to, very helpfull.
Dave