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Williams Sound FM 557-12 PRO
FM+ PRO System Package (12 R37 receivers)

Manufacturer SKU: FM 557-12 PRO
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Our Price: $4,305.00
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Top FM 557-12 PRO Specifications
  • System Includes
  • (1) FM T55 transmitter
  • (12) PPA R37N receivers
  • (12) EAR 022 surround earphones
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he FM 557 PRO system package is a complete turnkey solution. It includes 12 PPA R37N receivers and an FM+ transmitter for both FM and Wi-Fi transmission from the same box. 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.


  • (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

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