Williams Sound Personal FM Plus Assistive Listening System - FM 558

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Williams Sound Personal FM Plus Assistive Listening System - FM 558


The personal FM 558 Plus assisted listening system – now with integrated Wi-Fi – has replaced the existing 458 systems for public venues. 


  • With an operating range up to 1000 feet, the FM Plus 558 is ideal for large venues where superior coverage and an OLED user interface where a higher feature set and visibility is required.
  • It includes eight pre-configurable frequency-allocated channels for simultaneous use.
  • This complete turnkey solution includes four PPA R37N receivers, each featuring seekbutton channel selection with access to 17 selectable wideband frequencies between 72.1-75.9MHz.
  • This system complies with 2010 ADA guidelines for hearing assistance and is covered by Lifetime Plus limited warranty.


  • Dimensions (Receiver) : 4.1" x 2.85" x 1.38" (104 x 72 x 35mm)
  • Weight (Receiver) : 4.6oz (130g) with batteries. 2.6oz (73g) without batteries
  • Color: Black/Silver. Black ABS Plastic case with Aluminum faceplate.
  • Battery Type: (2) AA Alkaline or (2) AA NiMH Rechargeable

System Includes:

  • (1) FM T55 transmitter
  • (4) PPA R38N receivers
  • (4) EAR 022 surround earphones
  • (2) NKL 001 neckloops
  • (1) IDP 008 ADA wall plaque

Warranty Information

Lifetime PLUS Limited Warranty.

Manufacturer: Williams Sound 

NOTE: Approved by the FCC for operation in U.S. markets. The system cannot be used in all countries. Check with your government radio regulations for 72-76 MHz operation.


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