Just read through all these, really helpful. Many thanks to everyone above.   I'm on the same boat you were on Loki. I use to have a Beyerdynamic A1 from my room mate when he graduated. I used it with my own FiiO E17 as a DAC and that works well. But obviously the A1 is not for the Q701 and...

First post, hopefully I put it in the right place.   The amp hit the ground from top of my suitcase few months ago when I was in airport. (It fell out from a bag when the handle broke) Then it has never been on when I plug in the power cable. I opened the amp once but could not tell where was...