I have bought a used Audio Buddy to help me use my guitar and microphone with my box. The microphone XLR in works as expected, but as soon as I turn up the gain knob at the instrument in more than, say, 20-30%, the sound gets distorted with a crunch that would let some effects pedals appear pale in comparison. Is this to be expected? Leslie -- My personal blog: http://blog.viridian-project.de/