The DPA DAD9033 is a MicroLock to 4-pin Hirose cW-style adapter for connecting DPA miniature series headset, lavalier, and instrument microphones to compatible Audio-Technica wireless bodypack transmitters. The adapter fits older Audio-Technica transmitters that use the 4-pin Hirose cW-style connector including the System 10 and 2000 series along with 3000 series (third-generation and earlier) and the 5000 series (second-generation and earlier). For newer Audio-Technica transmitters that use the cH-style Hirose connector, use the DAD9040 adapter instead.