Designed specifically to function with the System 10 Pro Series from Audio-Technica, it's the ATW-RC13 Receiver.
This unit houses 2 receivers and is a half rack allowing you to put up to 4 channels into a single rack to conserve space. You'll find that it's an incredibly reliable and quality receiver. Looking at it, the ID display shows you RF signal level, transmitter battery fuel, system link status, and a numeric LED so you always know what's going on with it. With a great price like this, having the ATW-RC13 receiver on your side will definitely work to your benefit.
Maximum Output Level
Remote Receiver Connector