The LS-ADA-072 system meets the minimum requirements of the 2010 Americans with Disabilities Act (ADA) standards for accessible design. In addition to ensuring that public facilities are compliant; the system helps solve frustrating but common sound problems caused by distance, background noise, or poor room acoustics. The system can be ordered only on the 72 MHz frequency band, and can be customized if you need additional parts. Backed by Listen, this cost-effective solution will enrich your customers’ listening experience in lecture halls, public meeting rooms, playhouses, classrooms, centers for the performing arts, and more.


One (1) LT-803-072 Stationary 3-Channel RF Transmitter
Two (2) LR-200-072 Standard 3-Channel RF Receiver
One (1) LA-123 90° Helical Antenna
Two (2) LA-161 Single piece earphone
Two (2) LA-166 Neck Loop
Two (2) LA-361 High Capacity AA Alkaline Batteries (2)
One (1) LA-304 Assistive Listening Notification Signage Kit


  • Ensures public venues meet new 2010 ADA requirements and deliver an enriched listening experience
  • Easily switches between three different channels
  • Economical price – backed by Listen’s exceptional service and support
  • Reliable clear sound quality – 62 dB SNR
  • 30-day no obligation demonstrations available
  • Limited Lifetime Warranty – buy with confidence
Configurations & Architectural Specs


LS-ADA-072-01 ADA Basic RF Assistive Listening System (72 MHz) (North America)

Architectural Specs

Furnish and install an RF wireless assistive listening system for use by the hearing-impaired. The assistive listening system (ALS) shall be capable of broadcasting on 3 wide band channels and be frequency agile. The ALS system shall have 62 dB SNR or greater, end-to-end. Receivers shall be frequency agile to 3 wide band frequencies set with a “channel select” switch. The receivers will incorporate a stereo headset jack that allows the user to plug in either a mono or stereo headset and listen to audio normally. The receivers shall incorporate automatic battery charging circuitry for recharging of Ni-MH batteries. The receivers and transmitters shall offer a limited lifetime warranty. Listen Technologies Corporation LS-ADA-072 products are specified.

Product Specifications
Specification LS-ADA-072-01


Shipping Weight 20.0 lbs. (9.1 kg)
Q Can I purchase additional LR-200-072 receivers for my LS-ADA-072 system?
A Yes! Order as many as needed. The additional receivers will need an earphone (LA-161) or any other Listen earphones and batteries before being used.
Q What is the transmission range of the LS-ADA-072 system?
A Line of site up to 600 ft. (182.88 m) using the 90° Helical Antenna (72 MHz). Up to 1,500 ft. (457.2 m) using other remote antenna options
Q Can Listen's other 72 MHz receivers (LR-500-072, LR-400-072, and LR-300-072) be used with the LS-ADA-072 system?
A Yes. For best results, be sure the SQ function (Super Quiet) is turned off on any of the other receivers. Also, be sure to tune the receiver to the correct channel being used. All of Listen's receivers (aside from the LR-200-072) can SEEK to find the best local 72-75 MHz transmission.
Q What is the battery life of the LR-200-072?
A 120 hours alkaline. 75 hours NiMH
Q What are the differences between the LR-200-072 and other Listen receivers
A The LR-200-072 offers three (3) frequencies and can be changed inside the door of the receiver via a switch. The LR-200-072 does not have an LCD screen, the ability to SEEK for open frequencies, SQ (Super Quiet), squelch or programmability. Also, the Signal to Noise is 62 dB compared to 80 dB on Listen’s other receivers.
Q Is there a limit to the number of transmitters I can use in one room?
A Yes. The 72 MHz LT-800-072 has a maximum of (8) eight.

The building came an exceptional, state-of-the-art sound system, equipped with assistive-listening units from Listen Technologies. We have been thrilled with the crisp, clear sound these units affords, as well as their ease of use.

Valerie Sweers
Director, Grant Public Schools Fine Arts Center
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