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Williams Sound

Williams Sound WIR-RX22-4N 4-Channel IR Receiver

★★★★★3.8 (9 reviews)

Clear, wireless audio across a 28,000 sq ft space — the WIR RX22-4N delivers 100 hours of interference-free listening on two AA batteries.

$247.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Williams Sound WIR RX22-4N is a professional-grade infrared receiver built for assistive listening deployments in venues where audio accessibility, audio privacy, or multi-language distribution is a priority. With four selectable carrier frequencies — 2.3, 2.8, 3.3, and 3.8 MHz — a single installation can simultaneously serve multiple audience groups: hearing-assistance listeners on one channel, a secondary language interpretation on another, and additional services on the remaining channels. The receiver's ultra-sensitive IR detectors and compatibility with the TX925 and TX90 transmitters extend reliable coverage to 28,000 square feet in single-channel mode, making it a practical solution for large houses of worship, conference centers, courtrooms, and performing arts venues.

The receiver is designed around the needs of the end user in a managed venue setting. The rotary channel selector is intuitive enough that patrons unfamiliar with the device can operate it without instruction, and the combined on/off/volume knob keeps the control interface minimal. Two AA batteries delivering 100 hours of operation means a single battery change can support weeks of regular use in most venue scenarios — a meaningful operational advantage when you're managing a fleet of receivers. The standard 3.5mm output accepts the broadest range of headphone and neckloop accessories, and the inherent privacy of infrared technology — signals don't pass through walls — makes this system particularly appropriate for courtrooms and confidential conference settings where RF leakage would be a concern.

Key Features

Four-channel selectable 2.32.83.33.8 MHz.

Operating range 28,000 ft2 2,600 m2 in single channel mode with TX925 or TX90.

Ultra-sensitive IR receptors.

Exceptional audio quality.

2 AA batteries provide 100 hours of operation.

Specifications

Channels
4 (selectable: 2.3, 2.8, 3.3, 3.8 MHz)
Operating Range
Up to 28,000 ft² (2,600 m²) in single-channel mode with TX925 or TX90
IR Sensitivity
Ultra-sensitive dual IR receptors
Battery
2 × AA
Battery Life
Up to 100 hours
Compatible Accessories
Mono/stereo headphones, earphones, neckloops
Channel Selector
Rotary dial
Audio Output
3.5mm headphone jack

Pros & Cons

👍 Pros

  • The four selectable channels (2.3, 2.8, 3.3, 3.8 MHz) allow multiple independent listening groups to operate simultaneously in the same space without interference between them.
  • Ultra-sensitive dual IR receptors maintain reliable reception across up to 28,000 sq ft in single-channel mode — enough for large auditoriums, conference halls, or houses of worship.
  • 100 hours of battery life from two AA batteries makes battery management straightforward in venues where receivers are used daily.
  • The rotary channel selector and single on/off/volume control make the unit easy to operate for users who are not technically confident.
  • IR technology provides inherent signal privacy — audio cannot be received outside the room, which matters in confidential or accessibility-support contexts.

👎 Cons

  • Infrared requires line-of-sight or reflective surfaces to function — physical obstacles like pillars, balconies, or partitioned seating areas can create dead zones that require additional transmitter placement.
  • The receiver only works within the Williams Sound IR ecosystem; it is not compatible with RF assistive listening systems or generic IR consumer electronics.
  • Four-channel operation at maximum range requires specific Williams Sound transmitters (TX925 or TX90) — mixing with lower-powered transmitters reduces the effective coverage area.
  • The design prioritizes function over form, which is appropriate for an assistive listening device but means it is visually institutional in appearance.

Frequently Asked Questions

This receiver is designed to work with Williams Sound infrared transmitters operating on the 2.3–3.8 MHz bandwidth, including the TX925 and TX90. For maximum operating range — up to 28,000 sq ft in single-channel mode — pairing with a TX925 or TX90 transmitter is recommended.
Channel selection is handled via a rotary selector on the receiver body. The four channels correspond to carrier frequencies of 2.3, 2.8, 3.3, and 3.8 MHz. Rotating the dial to the appropriate channel matches the receiver to whichever frequency the transmitter is broadcasting on.
The WIR RX22-4N accepts standard mono or stereo headphones, earphones, and neckloops through its headphone output. Any standard 3.5mm headphone will connect directly, making it compatible with a wide range of personal listening accessories.
Two standard AA batteries power the unit for up to 100 hours of continuous operation. AA batteries are widely available and easy to replace, making this a practical choice for venues where battery management is a regular task.
No — infrared signals require line-of-sight or IR-reflective surfaces to propagate. Walls, doors, and solid partitions will block the signal. This is also why IR systems offer inherent privacy that RF systems do not: the audio cannot be received outside the room where the IR transmitters are installed.

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