Originally Posted by jimmers
and get a USB DAC
(you can get HiFiMeDIY Sabre DAC for <$50, or spend more, of course, if budget allows).
My current "do it all" budget favourite is FiiO X3.
And try the Q701 bass mod if you haven't already.
+1 on the HiFimeDIY DAC. I love my Sabre U2. If you can swing the $30 USB isolator, get that, too, or add it later.
I also love my JDS Labs C5 amp. They now have the C5D, which is the C5 amp + a DAC. Thread is here.
Schiit has a good budget-conscious line, too. And now they have a budget tube amp. Don't know much about it, but I'm sure there's a thread somewhere in Head-Fi
Bottom line: you can make the Qs shine without spending a lot. You'll notice the difference immediately.