This Kenwood MC-50 Desk Microphone in Very Good Condition and has beautiful audio. The Kenwood MC-50 is a dynamic cardiod desk microphone. It features a push-to-talk [PTT] and lock button. It has a four pin plug. This mic has connector switched, dual impedance ratings: 50k ohm (at 1000Hz) and 600k ohm (at 1000Hz). Frequency response from 150 Hz to 10 kHz (-6 dB). The MC-50 is the perfect match for many of classic Kenwood transceivers such as: TS-120S, TS-520S, TS-530S, TS-830S.