Sennheiser XSW-D-INSTR-BASE-SET Instrument Base Set with Transmitter & Receiver
(1) Sennheiser XSW-D 6.3mm (1/4") transmitter. (1) Sennheiser XSW-D 6.3mm (1/4") receiver. Mute from either transmitter or receiver. One-touch ease-of-use wireless audio set that utilizes a digital transmission to seamlessly link audio sources.