These are my new phones and my two CMoys' (separately of course) are having a little trouble powering them when connected to my Sansa Fuze. My Biosciencegeek CMoy works reasonably well but there is no high volume with the Bass Boost cMoy v2.02 at all. These wee amps are great with my Equation RP-21's (32 ohms) but obviously the step up to 250 ohm phones is asking too much. What would be a good powerful, great sounding portable amp to make these closed cans sing? I listen to a lot of music genres but mainly Rock and Acoustic.
Oh by the way i also should say i replaced the op amps in both with AD8620 on Brown Dog adaptor. Much better sound than Burr Brown 2227 that was fitted to both of them. Hope someone will be good enough to help me out here!