Williams AV FM 558-12 PRO FM+ Large-Area PRO Assistive Listening System Package with (12) R38 Receivers and Dante

Ensure every attendee and monitoring team member hears clearly with the Williams AV FM 558-12 PRO FM+ Large-Area Pro Assistive Listening System. Designed for professional environments—classrooms, auditoriums, houses of worship, events and security operations—this package pairs a powerful FM+ transmitter with Dante network audio to simplify integration into existing AV and surveillance setups. The kit includes twelve PPA R38 receivers for reliable simultaneous reception across large crowds and monitoring stations. With support for traditional FM and modern Wi‑Fi streaming, plus a frequency response tailored for speech (200 Hz–15 kHz), the system prioritizes intelligibility for spoken word, briefings and live commentary. Installers will appreciate the included accessories and expandable architecture that lets you grow coverage by adding receivers as needed. Whether you're improving accessibility for the hearing impaired, equipping a security monitoring room, or running multilingual tours, the FM 558-12 PRO delivers consistent, professional audio distribution. Contact our sales team to configure a deployment for your venue or order now to upgrade your audio for events, surveillance and monitoring applications.

• Delivers clear, intelligible audio to every listener, improving engagement and accessibility in classrooms, auditoriums and event spaces
• Includes (12) PPA R38 receivers for instant multi-user listening—ideal for large crowds, tours, and security monitoring teams
• FM+ transmitter with FM and Wi‑Fi streaming plus Dante network audio lets you integrate seamlessly with existing AV and surveillance systems
• Wide 200 Hz–15 kHz frequency response ensures spoken word clarity for speech-heavy applications like briefings, monitoring and live presentations
• Scalable, expandable design supports adding receivers to accommodate growing venues or extended security/surveillance deployments