Audio-Technica ATW-901A/L System 9 wireless system includes ATW-R900 receiver and ATW-901a body-pack transmitter with omnidirectional lavalier microphone.
Audio-Technica ATW-901A/L System 9 wireless system includes ATW-R900 receiver and ATW-901a body-pack transmitter with omnidirectional lavalier microphone. is backordered and will ship as soon as it is back in stock.
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Product Overview
The Audio-Technica ATW-901a/L is a System 9 frequency-agile VHF wireless lavalier system for presenters and lecturers in budget-conscious commercial AV rooms. The package includes the ATW-R900a receiver and ATW-901a body-pack transmitter with an omnidirectional lavalier microphone. With four user-switchable VHF channels, it is a straightforward wireless lavalier system for conference rooms, training rooms, and houses of worship.
Product Description
System 9 is designed for simple, reliable wireless speech where extensive frequency coordination is not required. The ATW-901a/L provides a complete body-pack package: the receiver, the ATW-901a transmitter, and an omnidirectional lavalier microphone for hands-light presenting.

The system operates on four user-switchable VHF channels (169.505, 170.245, 171.045, and 171.905 MHz), letting an operator select a clear channel and run more than one system where needed. The receiver connects to a mixer or DSP for integration into a room's audio system.
For higher channel counts and wider tuning in larger installations, Audio-Technica's UHF 3000 Series wireless lavalier system is a step-up option.
Key Features
- Complete System 9 lavalier package — Includes the ATW-R900a receiver, ATW-901a body-pack transmitter, and an omnidirectional lavalier microphone.
- Frequency-agile VHF — Four user-switchable channels let the operator select a clear frequency and run multiple systems where needed.
- Simple operation — System 9 is built for straightforward wireless speech without extensive frequency coordination.
- Body-pack form — The body-pack transmitter suits presenters and lecturers who need hands-light operation.
- AV-ready receiver — The receiver connects to a mixer or DSP for integration into a room's audio system.
Technical Specifications
| System type | Frequency-agile VHF wireless (System 9) |
|---|---|
| Channels | 4 user-switchable |
| Frequencies | 169.505, 170.245, 171.045, 171.905 MHz |
| Receiver | ATW-R900a |
| Transmitter | ATW-901a body-pack |
| Included microphone | Omnidirectional lavalier |
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