Williams Sound FM 557 FM+ and Wi-Fi Assistive Listening, 4 Receivers


Williams Sound FM 557FM+ and Wi-Fi Assistive Listening, 4 Receivers


Part of the FM+ Assistive Listening Systems lineup from Williams Sound, the FM 557 is a large-area Dual FM and Wi-Fi® assistive listening system with 4 FM R37 receivers.

FM+ from Williams Sound

This groundbreaking tech provides an industry-first choice of employing traditional FM receivers or using personal electronic devices over Wi-Fi for hearing assistance. Along with this versatility comes exceptional audio quality, as FM+ is assembled on a professional digital audio (DSP) platform. This technology is designed to support those who want to use their own smartphones and headphones for a more discreet assistive listening experience. Simplicity and flexibility is also available for those who prefer a more traditional assistive listening system with a dedicated FM receiver and headset. Now, venues will no longer need to choose between providing FM or Wi-Fi assistive listening systems. FM+ supports the iOS and Android WaveCAST Apps as well as the Wi-Fi Receiver– in addition to all of the current and legacy Williams Sound FM receivers that operate on the 72-76 MHz bandwidth.

FM 557 System Includes

  • (1) FM T55 transmitter
  • (4) PPA R37N receivers
  • (4) EAR 022 surround earphones
  • (2) NKL 001 neckloops
  • (1) IDP 008 ADA wall plaque

FM+ T55 System Features

  • Professional audio inputs: ¼”/XLR, phantom power, line level output jack
  • Audio presets — hearing assistance, music, voice and custom
  • 16-bit DAC provides 48 khz sample rate
  • 10-segment LED bar graph

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