http://www.binaryelysium.com/itrip_amp/

LITERAL:
The following is a proof of concept abstract on the itrip amplifier using the schematic available from thewolfweb [link]. Its purpose is to increase the signal produced by the Griffin iTrip [link]. Use of the finished device is prohibited (in the US and Canada) as it violates Part 15 [link] of FCC laws.

I (nor anyone else) can or will be held responsible to any damage you inflict upon your itrip, ipod, person, other persons or anything else. This is an electrical circuit, which means there will be live points. Be careful. You do all of this at your own risk.