Product Features 2 x 4 Channel Frequency Plan Clear Receiver Display Rack-Mountable Design Intuitive Receiver and Transmitter Controls RF Indicator Light Sturdy But Stylish Build Quality System Specifications Frequency range: 824 - 831 MHz, 863-865 MHz Modulation mode: FM Number of frequencies: 2x 4-frequencies Operating range: 60m, typical Frequency response: 60 Hz - 16 kHz Frequency stability: +/- 0.005%, Phase lock loop frequency control Reciever Specifications Receiving system: Antenna switching diversity Image rejection: 55dB minimum Dynamic range: HH: 108 dB, BP 103 dB (@ max deviation) Sensitivity: 10dBµV (S/N 60dB @ 20 kHz deviation) Total Harmonic Distortion: <1% - 20 kHz deviation @ 1 kHz Level control: Mic / Line (0 / -20dB) Antenna Input: BNC type, 50O - BIAS voltage 12V DC 100mA each Audio Output: Unbalanced -2dBV, Balanced 4dBV Output connectors: Unbalanced: 6.3 mm mono jack, Balanced: XLRM-type Dimensions: 200 mm x 42 mm x 122 mm (W x H x D) Weight: 418 g without accessories Accessories included: AC Adapter, Antennas, Rack mount adapter Optional System Accessory: AT8677 Dual rack mount kit