Hosa MIT Hosa MIT Description: To run a low-impedance XLR terminated line (like a pro microphone) into a high-impedance phone input (like a guitar-amp input), it's often necessary to use a line matching transformer like our MIT-435 or MIT-176. The MIT-129 is for impedance matching of a high impedance phone equipped source (like and electric guitar) into a low-impedance (mic-level) XLR type input. MIT-129 Mic Transformer, 1/4" Female HI-Z to XLR Male LO-Z MIT-176 Mic Transformer, XLR Female LO-Z to 1/4" Male HI-Z, "Pigtail" MIT-435 Mic Transformer, XLR Female LO-Z to 1/4" Male HI-Z Line-Matching Transformer, 600ohm Low-Z to 2500ohm Medium-Z. Matches microphones with XLR connectors to 3.5mm inputs found on personal portable recording devices, camcorders, and computers. MIT-156 Mic Transformer, XLR Female LO-Z to 1/8" Male HI-Z Get your Hosa MIT Today !