Audio-Technica's System 9 is a four-channel frequency-agile wireless system designed to provide rock-solid performance along with easy setup and clear, natural sound quality. Featuring sleek, stackable, contemporary styling, System 9 is available in handheld, headworn, guitar, lavalier and body-pack configurations. The system offers four compatible user-switchable VHF channels (169.505, 170.245, 171.045, and 171.905 MHz). 

Each System 9 configuration includes the ATW-R900a receiver and either a body-pack transmitter or handheld microphone/transmitter. The ATW-R900a is a non-diversity, single-channel receiver with advanced dipole antenna design for extended operating range, which improves operation by providing a ground element in addition to the usual signal element. The ATW-R900a also offers volume control along with AF Peak, RF and Power indicator lights.

• Easy to use, with clear and natural sound quality
• 4 frequency-coordinated selectable VHF channels
• 1/4" balanced and unbalanced XLR output connectors compatible with a wide variety of audio adapters
• Reliable performance and rugged manufacturing
• Advanced dipole antenna system to increase operating range

GENERAL SYSTEN SPECIFICATIONS

• Operating Frequencies: VHF high band, 169 to 172 MHz
• Modulation Mode: FM
• Maximum Deviation: +/- 10 kHz
• Dynamic range: > / = 90 dB (Weighting A), typical
• Total harmonic disturbance: <1% (at 1 kHz, deviation of +/- 10 kHz)
• Total harmonic distortion: <1% (at 1 kHz, deviation of +/- 10 kHz)
• Operating Range: 200 '(60 m), typical (Open environment without signal interference)
• Operating Temperature Range: 40 ° F (4 ° C) to 110 ° F (43 ° C) (Battery and LCD display performance may be affected by very low temperatures.)
• Frequency Response: 80 Hz to 13 kHz
• Maximum Simultaneous Use (Recommended): 200 'minimum

RECEIVER SPECIFICATIONS

• Receiver System: Dual antenna system, without diversity and a single channel Image rejection: 50 dB minimum
• RF sensitivity: 20 dBuV at 60 dB S / N (50 ohm termination)
• Audio Output: Nominal output level; XLR, balanced: 350 mV (1 kHz modulation, 10 kHz deviation, 100k ohm load); 1/4 "(6.3 mm), unbalanced: 700 mV (1 kHz modulation, 10 kHz deviation, 100k ohm load)
• Power Supply: 100-240 V AC (50/60 Hz) at 12 DC. 5 A (positive center) switched mode, external power supply
• Dimensions:0 mm (7.48 ") wide x 46.2 mm (1.82") high x 128.5 mm (5.06 ") deep
• Net Weight:0 oz (337 g)
• Accessory Included: Power Supply

BODY PACK TRANSMITTER SPECIFICATIONS

• RF Power Output: 10 mW
• False Emissions: According to federal and national regulations
• Input Connections: Connector with four pin anchor; Pin 1: Earth; Pin 2:
• Instrument input; Pin 3: Microphone input; Pin 4: DC + 9V polarization
• Batteries: Two 1.5V AA type, not included
• Battery Life: 8 hours (alkaline) (Depending on the type of battery and usage pattern)
• Dimensions:2 mm (2.76 ") wide x 24.9 mm (0.98") deep x 103.7 mm (4.08 ") high
• Net Weight:8 oz (80 g), without batteries

HANDHELD TRANSMITTER SPECIFICATIONS

• RF Power Output: 10 mW
• False Emissions: According to federal and national regulations
• Batteries: Two 1.5V AA type, not included
• Battery Life: 8 hours (alkaline) (Depending on the type of battery and usage pattern)
• Dimensions:91 "(251.8mm) long, 2.11" (53.5mm) diameter
• Net Weight:2 oz (260 g), without batteries
• Accessory Included: Quiet-Flex ™ AT8456a Pedestal Clamp