****SOLD***
I am still trying to pair down my portable amp "collection", and this one needs to go. This Headphonia has the built in USB DAC, crossfeed, impedance and gain switches. It has a battery charging circuit, but the amp does not come with the needed power supply as Headphonia doesn't include one.
New price is $229 + 8 shipping, I will sell for $180 shipped ConUS.
Link to their site, with picture:
http://www.headphonia.com/Amps/HEADP...85daf7ee9acbcd
(Note mine is the first version of the amp which uses a LM op amp, not the AD8397).