Audio-Technica System 9 ATW-901A/H VHF Wireless Unipak System with PRO 8HEcW Head Microphone

SKU: ATATW901AH MFR: ATW-901A/H
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Key Features

  • Experience freedom with this VHF wireless microphone system, perfect for dynamic performances.
  • Crystal-clear audio: The PRO 8HEcW head microphone ensures your voice is always heard.
  • Enjoy a wide 200' operating range, offering mobility on stage or during presentations.
  • This unipak system's lightweight body-pack transmitter is comfortable for long use.
  • Simple setup with locking connector allows quick changes, ideal for active performers.
  • Reliable Audio-Technica wireless performance with minimal interference for clear sound.
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Special Order?Estimated to Ship: 09/06/2025
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Audio-Technica ATW-901A/H Specifications

System
  • System Type

    VHF high band

  • Operating Frequencies

    169.505, 170.245, 171.045, 171.905 MHz

  • Modulation Mode

    FM

  • Maximum Deviation

    +/-10 kHz

  • Dynamic Range

    >=90 dB (A-weighted), typical

  • Operating Range

    200' (60.96m) typical, open range environment with no interfering signals

  • Operating Temperature Range

    4 to 43 deg. C (39 to 109 deg. F), battery performance may be reduced at very low temperatures

  • Frequency Response

    80 to 13,000 Hz

Receiver

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  • Receiving System

    Non-diversity, single-channel, dual-antenna system

  • Image Rejection

    50 dB minimum

  • Audio Output

    Nominal Output Level
    Balanced XLR: 350 mV (1 kHz modulation, 10 kHz deviation, 100-kOhm load)
    Unbalanced 1/4" (6.3 mm): 700 mV (1 kHz modulation, 10 kHz deviation, 100-kOhm load)

  • Power Supply

    100 to 240 VAC (50/60 Hz) to 12 VDC at 0.5 A (center positive) switched mode external power supply

Transmitter

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  • RF Power Output

    High: 10 mW

  • Spurious Emission

    Following federal and national regulations

  • Input Connections

    Four-pin, Locking Connector
    Pin 1: GND
    Pin 2: INST INPUT
    Pin 3: MIC INPUT
    Pin 4: BIAS +9 VDC

  • Batteries

    Two 1.5 V AA (not included)

  • Current Consumption

    8 hours (alkaline), depending on battery type and use pattern

General

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  • Dimensions (WxHxD)

    Receiver: 7.48 x 1.82 x 5.06" (19.00 x 4.62 x 12.85cm)
    Transmitter: 2.76 x 4.08 x 0.98" (7.01 x 10.36 x 2.49cm)

  • Weight

    Receiver: 12.0 oz (340.19g)
    Transmitter: 2.8 oz (79.38g) (without batteries)

  • UPC Code

    042005194896

About Audio-Technica ATW-901A/H

It is with great precision that Audio-Technica presents the System 9 ATW-901A/H VHF Wireless Unipak System, a meticulously engineered four-channel, frequency-agile wireless solution that ensures robust performance with straightforward setup procedures. This system is designed to deliver clear, natural sound quality, making it an ideal choice for professionals seeking reliable audio transmission.

The System 9 stands out with its sleek, stackable design, which is not only contemporary in appearance but also versatile in its application. It is offered in various configurations to suit different needs, including handheld, headworn, guitar, lavalier, and bodypack options, catering to a wide range of audio setups.

This particular package features the PRO 8HEcW Hypercardioid Dynamic Headworn Microphone, which is renowned for its focused pickup pattern, reducing the pickup of sounds from the sides and rear, and enhancing feedback elimination. The microphone is equipped with a 55" (1.4 m) permanently attached miniature cable, which terminates with a locking 4-pin connector, ensuring secure and reliable connection to Audio-Technica cW-style body-pack transmitters.

The system's four user-selectable VHF channels (169.505, 170.245, 171.045, and 171.905 MHz) provide compatibility and flexibility in various environments. Each System 9 configuration includes the ATW-R900a receiver along with a body-pack transmitter or a handheld microphone/transmitter, depending on the chosen setup.

The ATW-R900a receiver is a single-channel, non-diversity unit that boasts an advanced dipole antenna design. This design significantly extends the operating range by incorporating a ground element to complement the standard signal element, thus enhancing overall reception and performance stability.

Additionally, the receiver is equipped with convenient volume control and indicator lights for peak AF, RF, and power status, allowing for easy monitoring and adjustment during use. The inclusion of both XLR balanced and unbalanced 1/4" output connectors ensures compatibility with a broad array of audio equipment, from mixers and PA systems to recording devices.

Crafted for dependable performance and constructed with durable materials, the System 9 ATW-901A/H VHF Wireless Unipak System with PRO 8HEcW Head Microphone is an excellent choice for performers, speakers, and audio technicians who demand quality wireless audio solutions.

Audio-Technica ATW-901A/H Features

  • Four-channel, frequency-agile wireless system for clear, natural sound quality
  • Versatile configurations including handheld, headworn, guitar, lavalier, and bodypack
  • Includes PRO 8HEcW Hypercardioid Dynamic Headworn Microphone for focused sound pickup
  • Four user-selectable VHF channels (169.505, 170.245, 171.045, and 171.905 MHz) for flexible audio transmission
  • Advanced dipole antenna design in ATW-R900a receiver for extended operating range
  • Compatible with a wide variety of audio equipment through XLR balanced and unbalanced 1/4" output connectors

Warranty Information

This product has a limited warranty of 24 months.

Product Documents

User Manual

Key Features

  • Experience freedom with this VHF wireless microphone system, perfect for dynamic performances.
  • Crystal-clear audio: The PRO 8HEcW head microphone ensures your voice is always heard.
  • Enjoy a wide 200' operating range, offering mobility on stage or during presentations.
  • This unipak system's lightweight body-pack transmitter is comfortable for long use.
  • Simple setup with locking connector allows quick changes, ideal for active performers.
  • Reliable Audio-Technica wireless performance with minimal interference for clear sound.

What's in the box:

  • Audio-Technica ATW-R900a Receiver
  • ATW-T901a Body Pack Transmitter
  • PRO 8HEcW Head Microphone
  • Power Supply
  • Audio-Technica 2 Year Limited Warranty