Samson SWSYSHX-N AirLine Synth Wireless System - Handheld Q7 (AX300/AR300) AX300 Micro transmitter plugs into any XLR dynamic mic, Frequency-agile synthesized tuning with over 300 channels*, IR transmitter channel set LCD display, Mute switch, 15 dB pad, Gain control, Low battery indicator, Samson Q7 mic included Frequency-agile synthesized True Diversity receiver with over 300 channels*, Automatic Channel Scan to select the clearest frequency, Infrared transmitter channel set 50mm x 20mm backlit LCD display, Metal half-rack chassis, Dual front-mounted removable TNC antennas, Squelch control XLR and 1/4-inch balanced outputs, Mic or line level switch, 11 simultaneous systems**, Rack mount kit included