I've got a Tascam FW-1082 with the headphone output going into a Samson C-Que headphone distribution amp. I want to add a talk-back mic without sacrificing any of the board's 8 inputs. The C-Que has an additional inject input that mixes with the stereo outs from the board. I'd like to add a preamp and mic there. I tried it with one of my other preamps and it works well. Can anyone recommend a cheap single channel mic-pre? Say under $50. Both XLR and 1/4" inputs would be nifty. Sound quality obvisouly doesn't have to be high, or even good. Just decent enough for my musicians to hear me. Thanks for your time!