The Galaxy Audio AS-1400T is the transmitter unit for their AS-1400 series of Wireless Personal Monitors (receivers sold separately). It features stereo XLR/¼" inputs, headphone output with volume control, input level control, and a LCD display for channel and input level. Galaxy Audio AS-1400T Transmitter Features: 275 Selectable UHF Frequencies Send a Stereo or Mono Mix to Any Number of Receivers on Stage Trouble Free Wireless Connectivity XLR to ¼" Connection From Any Source Device Easy to Read LCD Screen with metering Input Level Control 1/4" Headphone Output with Volume Control for Easy Monitoring Galaxy Audio AS-1400T Transmitter Specifications: Main Frame Size: EIA STANDARD ½ RU Modulation Mode: FM Stereo Modulation RF Output: 30 mW Max Audio Input Level: +6dBV Gain Adjustment Range: 33dB Audio Input: Line Level x 2, XLR/ ¼" Combo Jack XLR Input: Balanced Pin 1: Ground (cable shield) Pin 2: Audio + Pin 3: Audio - Audio Output: ¼" Headphone Out Dimensions (HxWxD): 1.7" x 8.2" x 7.1" (44 x 209 x 180 mm) Weight: 37.4 oz (1,060 g) Power Requirements: 12-18 V DC at 300 mA supplied by external power supply