Williams AV FM+ 558-12 PRO Assistive Listening System with Rack Panel Kit for Dual FM and Wi-Fi Transmission (12 Receivers)

Williams AV FM+ 558-12 PRO ADA Compliant Assistive Listening System with Rack Panel Kit

The FM+ 558-12 PRO System is a complete assistive listening solution tailored for mid-size venues, combining advanced functionality with professional installation accessories for quick, efficient setup.

At the heart of the system is the FM+ C transmitter, delivering simultaneous real-time audio over both FM and Wi-Fi. This dual-transmission capability ensures all visitors can connect—whether using the WaveCAST app on their smartphones or the included R38 receivers, which feature a bright OLED screen, digital tuning, and access to 17 preset wideband channels (72.1–75.9 MHz). The system supports unlimited listeners.

To keep devices ready at all times, the system includes a 12-bay charging station with rechargeable batteries, and an ADA wall plaque is provided to promote accessibility to guests.

For seamless installation, the package includes a coaxial antenna and rack panel kit, ensuring clean integration and optimal performance in any professional AV environment.

• For both FM and Wi-Fi Transmission
• Complete Assistive Listening System
• 12 PPA R38N Receivers
• 12 EAR 033 Surround Earphones
• Three Neckloops, one ADA Wall Plaque
• Antenna, Batteries and Battery Charger
• Rack Panel Kit

FM+ User Manual

FM 558 Data Sheet

FM+ Quick Start Guide

FM T55C Data Sheet

FM T55C Manual

PPA R38N Data Sheet

• (1) FM T55C Transmitter
• (12) PPA R38N Receivers
• (12) EAR 022 Surround Earphones
• (3) NKL 001 Neckloops
• (1) CHG 3512 12-Bay Charger
• (12) BAT 026-2 AA NiMH Rechargeable Batteries
• (1) ANT 005 Remote Coaxial Antenna
• (1) IDP 008 ADA Wall Plaque
• (1) RPK 005 Rack Panel Kit