I was under the impression the burn-in the amp needed was about more than just the tubes...was I wrong in that?
Put the headphones back on my head for a few moments this morning before work. Still doesn't sound as amazing as I'd expected. Bass is light, highs are harsh, grating. I'm starting to get nervous. Little did I suspect when I went from a EF5/HE-500 rig to a ALO PanAm/LCD-2.2 rig I would be disappointed, but I am so far. I really hope it's the burn-in thing. The previous owner of these headphones said they had about 150 hours on them - perhaps they too are still burning in? I just don't know...reassure me folks?
So for clarity my source is a PC running J River, (no DSPs enabled or any EQ) using the Pan Am's DAC, and the amp is connected to the Passport. I'm on the high gain setting, and have been playing around with adjusting amp volume vs J River volume, but that's the only tweaking I'm doing. Have been burning in for perhaps 10 hours, give or take.
Burning process is making the SQ even better but from the start you should already have a good quality... maybe you got some issues regarding your usb cable or usb port??