Here's two rare RCA MI-38004 Dynamic microphones from the 1950's (Price is $65 Each). RCA contracted Shure to make these microphones for them! Shure placed one of their controlled reluctance elements inside (which are highly sought after by harmonica players for their crunchy tone). These are noisy and have an old timey sound that make them great effects microphones. They have standard threaded holes and cords to XLR (however I'm including adapters for use with a high impedance input). Grab one of these RCA dynamic microphones to add some crunchy effects to your mix!