As for amping the Q701, I currently use the Maverick Audio TubeMagic D1 Plus with the Schiit Magni. If you want an all-in-one solution, the D1 Plus is really very nice. My only complaint about it is that it's quite loud. If you mod the D1 so you can control the volume of the analog out, it's good with the Schiit Magni, which has much better volume control. I have also used the Qs with the E17 and the E9. I did not like the E9 at all. I found the sound overall to be very unpolished. I think this has something to do with the output impedance. The E17 is a great little dac/amp, but I wouldn't rely on it to power the Qs. You'll hear music, but they won't sound their best. The quality of your source will also make a difference. I've invested in a bit more 24bit music and I have to say, it sounds fantastic. That extra bit of clarity is really a pleasure through the Qs.
Also, I have no idea if this makes a difference or not, but my Qs are made in Austria, not China.