I found some other options:
http://www.amazon.com/FiiO-Headphone-Amplifier-Micca-Cable/dp/B005JT8OT6/ref=zg_tr_13880161_8
There are similar ones also on amazon as well as guitar headphone amps...
Type: Posts; User: Twobit
I found some other options:
http://www.amazon.com/FiiO-Headphone-Amplifier-Micca-Cable/dp/B005JT8OT6/ref=zg_tr_13880161_8
There are similar ones also on amazon as well as guitar headphone amps...
Check out http://Boostaroo.com/
i can't vouch for them personally but they claim to be an in-line amplifier. You would need a 1/4 inch jack adapter I think.
Lou