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ATW-901a – ATW-R900a receiver and ATW-T901a body-pack transmitter

Brand: Audio Technica


ATW-R900a receiver and ATW-T901a body-pack transmitter

In stock

SKU: ATW-901a Categories: ,
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 operation and clear, natural sound quality
  • 4 selectable frequency-coordinated VHF channels
  • Balanced XLR and unbalanced 1/4″ output jacks enable use with a wide variety of audio gear
  • Reliable performance and durable construction
  • Advanced dipole antenna system for extended operating range
Operating Frequencies VHF highband, 169 MHz to 172 MHz
Modulation Mode FM
Maximum Deviation +/-10 kHz
Frequency Response 80 Hz to 13 kHz
Operating Range 200′ (60 m) typical
Open range environment with no interfering signals
Total Harmonic Distortion <1% (at 1 kHz, +/-10 kHz deviation)
Operating Temperature Range 40° F (4° C) to 110° F (43° C)
Battery performance may be reduced at very low temperatures
Notes First-generation System 9 (original) components:
ATW-R900 receiver
ATW-T901 body-pack transmitter
Click here for the original System 9 Owner’s Manual.
Body Pack
RF Power Output 10 mW
Battery Life 8 hours (alkaline)
Depending on battery type and use pattern
Battery Type Two 1.5V AA
not included
Dimensions 2.76″ (70.2 mm) W x 4.08″ (103.7 mm) H x 0.98″ (24.9 mm) D
Input Connections Four-pin Locking Connector
Pin 1: GND
Pin 4: DC BIAS +9V
Net Weight 2.8 oz (80.0 grams)
without batteries
Spurious Emissions Following federal and national regulations
Receiving System Non-diversity, single-channel, dual antenna system
Image Rejection 50 dB minimum
RF Sensitivity 20 dBuV at 60 dB S/N ratio (50 ohms termination)
Power Supply 100-240V AC (50/60 Hz) to 12V DC .5A (center positive) switched mode external power supply
Operating Temperature Range 40° F (4° C) to 110° F (43° C)
Dimensions 7.48″ (190.0 mm) W x 1.82″ (46.2 mm) H x 5.06″ (128.5 mm) D
Weight 12.0 oz (337 grams)
Accessories Included Power supply
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)
Weight 4 lbs


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