This is a headphone amp I made which is great for more volume out of your media players (ie. Ipods, minidisc players, etc). Clarifies the signal and adds better oomph to it... All the info in my ebay auction: [color=red][url]http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=5871914996[/url][/color] If there's any questions, just email me (email address on the ebay page).

can you make one that outputs to 1/4 in jack??? for my big ass open cans? also can you use a dial insted of a knob for the gain and what type of batt. dose this use?? do you have a wire diagram???