I'm not sure if this is the right sub-forum, but I'll try it anyways. I need to boost a headphone-level signal into a line-level signal so that I can drive a power amp with it. This needs to be done without coloring the sound that comes from the headphones-out and the solution should be about the size of a stomp box. And it should be something that won't cost much So , what are my options?
Headphone levels are higher than line levels but should still work (this is the case on my practice amp). Here is a great write-up on the subject I found. http://www.sweetwater.com/expert-center/techtips/d--10/26/2000