ATW-R900 receiver & ATW-T901 UniPak transmitter.

Audio-Technica's System 9 is a four-channel frequency-agile wireless system designed to provide rock-solid performance along with clear, natural sound quality and easy setup, at an affordable price. 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 channels in one of four available VHF frequencies (169.505, 170.245, 171.045, and 171.905 MHz).

Audio-Technica ATW-901

    Operating Frequency    VHF highband, 169 MHz to 172 MHz
    Modulation Mode    FM
    Maximum Deviation    +/-10 kHz
    Dynamic Range    >/=90 dB (A-weighted), typical
    Total Harmonic Distortion    <1% (at 1 kHz, +/-10 kHz deviation)
    Operating Range    200' (60 m) typical
    Open range environment with no interfering signals
    Operating Temperature Range    40° F (4° C) to 110° F (43° C)
    Battery performance may be reduced at very low temperatures
    Frequency Response    80 Hz to 13 kHz

    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)
    Audio Output    1/4" (6.3 mm), unbalanced: 700 mV (1 kHz modulation, 10 kHz deviation, 100k ohm load), nominal
    Power Supply    100-240V AC (50/60 Hz) to 12V DC .5A (center positive) switched mode external power supply
    Dimensions    7.48" (190.0 mm) W x 1.82" (46.2 mm) H x 5.06" (128.5 mm) D
    Net Weight    11.8 oz (335 grams)
    Accessory Included    Power supply

    RF Power Output    10 mW
    Spurious Emissions    Following federal and national regulations
    Input Connections    Four-pin Locking Connector 
    Pin 1: GND 
    Pin 2: INST INPUT 
    Pin 3: MIC INPUT 
    Pin 4: DC BIAS +9V
    Batteries    Two 1.5V AA Alkaline (not included)
    Battery Life    8 hours (alkaline) 
    Depending on battery type and use pattern
    Dimensions    2.76" (70.2 mm) W x 4.08" (103.7 mm) H x 0.98" (24.9 mm) D
    Net Weight    3.0 oz (84.5 grams) 
    (without battery)

851 St. Michael’s Drive, Santa Fe 87505
Hours: Monday thru Saturday 9:30-6:00
          Sunday 12:00-5:00