Shure – PSM900 Wireless IEM System on May 8, 2017 | Marketing Team The P9T transmitter is a part of Shure's PSM 900 series, the first-ever to include the extremely convenient CueMode technology. This potentially show-saving feature lets the monitor engineer listen to up to 20 different feeds that are being sent out to the performers and their P9R receivers onstage. That way, with the P9T, the monitor engineer can easily make important adjustments to levels and balance everything, so the performers hear what they need to hear to sound their best. The P9T transmitter is a half-rack wireless transmitter, complete with 1/4" and XLR outputs, loop out, and a headphone out. You also get a rack mounting kit, front- or back-mountable antennas, and a power supply with the Shure P9T.