New Page 1Authorized Audio TechnicaDealer! Description: Audio-Technica s System 9 isa four-channel frequency-agile wireless system designed to provide rock-solidperformance along with easy setup and clear natural sound quality. Featuringsleek stackable contemporary styling System 9 is available in a head wornconfigurations. The system offers four compatible user-switchable VHF channels.Each System 9 configuration includes the ATW-R900a receiver and either abody-pack transmitter or handheld microphone/transmitter. The ATW-R900a is anon-diversity single-channel receiver with advanced dipole antenna design forextended operating range which improves operation by providing a ground elementin addition to the usual signal element. The ATW-R900a also offers volumecontrol along with AF Peak RF and Power indicator lights. Features: Audio Technica ATW-901a/H Wireless Headset MicrophoneMic 169.505 - 171.905 MHz Easy Operation and Clear Natural Sound Quality 4 Selectable Frequency-Coordinated VHF Channels Balanced XLR and Unbalanced 1/4 Output Jacks enableuse with a wide variety of audio gear Reliable performance and durable construction Advanced dipole antenna system for extended operatingrang Operating Frequencies: VHF High Band 169 MHz to 172MHz Modulation Mode: FM Maximum Deviation: +/- 10 kHz Dynamic Range: >/= 90dB (A-Weighted) typical Total Harmonic Distortion: < 1% (at 1 kHz +/- 10 kHzdeviation) Operating Range: 200 feet Operating Temperature Range: 40° F - 110° F Frequency Response: 80 Hz - 13 kHz Receiver Specifications: Receiving System: Non-diversity single-channel dualantenna system Image Rejection: 50 dB minimum RF Sensitivity: 20 dBuV at 60 dB S/N ratio (50 ohmstermination) Audio Output: Nominal Output Level XLR balanced: 350 mV (1 kHz modulation 10 kHzdeviation 100k ohm load) 1/4 (6.3 mm) unbalanced: 700 mV (1 kHzmodulation 10 kHz deviation 100k ohm load) Power Supply: 100-240V AC (50/60 Hz) to 12V DC .5A(center positive) switched mode external power supply Dimensions (W x H x D): 7.48 x 1.82 x 5.06 inches Net Weight: 12.0 oz Accessory Included: Power Supply Body-Pack Transmitter Specifications: RF Power Output: 10 mW Spurious Emissions: Following federal and nationalregulations Input Connections: Four-pin Locking Connector Pin 1: GND