It's still a little raggedy but boy oh boy this amp cooks. I put it up against my Musical Fidelity XCan V3 and it more than held its own. My guess is that after beak in this amp is going to smoke the MF. It has the GCC house sound, clean as a whistle, and pitch black background. So far I have tried it with Audio Technica W1000's, Grado SR225's and Westone UM2's and all have shone with this amp, the AT especially which like the Senns need a bit of beef in the amplification department. The Westone's which are IEMs lost a little in the headstage department which is probably a compatibility issue rather than an amp issue."

Kane