Sennheiser XSW IEM SR Stereo Transmitter

A second mix needs a second transmitter, not a second whole system. The XSW IEM SR is that transmitter: one stereo UHF channel in a 200 x 128 x 42 mm metal housing with a backlit front panel, an antenna, and the NT 12-5CW supply in the box.

Inputs are two XLR and quarter-inch combo sockets, balanced, so it takes a console aux or matrix feed directly. A quarter-inch headphone output on the front lets the monitor engineer check the mix without stealing a pack. Audio runs 45 Hz to 15 kHz. Buy the band that matches the packs already in the rig: A is 476 to 500 MHz, B is 572 to 596 MHz.