I have read there are some quality control issues with the Maverick audio stuff. Not real bad just minor stuff.... I can't quote directly where but I know I read it on Headfi.org.
If you really want a quality entry level amp and dac... check out
"Schiit Audio". While I don't own a piece of schiit yet, I will. I have read really good things about the Modi Dac (99$) and their Magni Amp(99$). Their quality control is top notch and they offer 2 or 5 year warranties on their gear, depending on what you buy.
Also check out
JDS Labs O2 Dac/Amp combo. This Dac/Amp is now legendary in the audio world.
Hope this helps... peace OOK