The Williams AV FM 557-24 PRO D Dante Assistive Listening System includes 24 PPA R37N receivers and an FM+ D transmitter for both FM and Wi-Fi transmission from the same box. Dante-enabled receiver. The PRO bundle includes a coax cable, and rack panel kit for professional installation.

This system features the cutting edge PPA T55 transmitter (replacing the T45 FM transmitter) with multiple digital audio input options and an OLED display with easy-to manage navigation, and network control features.

Each PPA R37N receivers features a seek button channel selection with access to 17 selectable wideband frequencies between 72.1-75.9MHz. The system is expandable, accommodating any number of listeners. This system complies with 2010 ADA guidelines for hearing assistance all for nearly the same cost as traditional FM systems.