Williams Sound Personal FM Listening System - Model PFM PRO RCH

$688.00 List Price: $999.99
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Williams Sound Personal FM Listening System - Model PFM PRO RCH


Williams Sound FM Systems are always top quality, top of the line performance, and come equipped with a best in class Lifetime PLUS Limited Warranty.

  • Great for Classrooms
  • Great for learning centers
  • Great for churches

We offer discounts for schools, churches, and qualifying businesses. Please contact us at 800-991-6207 or through the contact us page by clicking HERE

We provide custom quotes in the event that you need multiple transmitters, receivers, or stationary systems. Please contact us so we can get the right solution for your situation.

The PFM PRO RCH personal FM system is perfect for provided hearing assistance in a variety of environments. This system is most popular among teachers when dealing with students that need assistance. The assistance may be needed for a hearing impairment or for focus and attention.

The system is also great for hearing impaired users attending church, conferences, learning centers, or for clear communication with another person.

The system is simple to use. The individual speaking wears the body pack transmitter with microphone. The user wears the receiver and headphones or earbuds that are provided. Both units are turned on and to the same channel. The system provides a clear channel of communication to prevent distractions or provided amplified assistance of the speakers voice. The system also comes with a aux cable. This allows the transmitter to be plugged into any audio source to be transmitted to the student or user. This allows video's, assemblies, or other instruction and information to be sent to the receiver.

Each system features 17 selectable channels on the 72-76 MHz band and has an operating range of up to 150 feet. A versatile 3.5mm jack allows for a variety of earphones and headphone options, and is compatible with neckloops and telecoil-equipped hearing aids (not included with system).

DISCLAIMER: FCC rules limit use of this equipment to auditory assistance.

NOTE: The PFM PRO and PFM PRO RCH systems are approved by the FCC for operation in U.S. markets. These systems cannot be used in all countries. Check with your government´s radio regulations for 72-76 MHz operation.


  • Classrooms
  • Small-group listening
  • Employee training
  • Consultations
  • One-on-one conversations
  • (1) FM Body-pack Transmitter (PPA T46)
  • (1) FM Body-pack Receiver (PPA R37)
  • (1) Single Mini Earphone (EAR 041)
  • (1) Folding Headphone (HED 021)
  • (1) Audio Input Cable (WCA 087)
  • (1) Lavalier Microphone (MIC 090)
  • (2) AA Rechargeable NiMH Batteries (BAT 026-2)
  • (1) System Carry Case (CCS 043)
  • (1) Dual Drop-in Charger (CHG 3502)


bat 026-2

NiMH, 1.2 Volt, 1500 mAh

ear 041

Style Single, in-ear, isolation earphone
Plug 3.5mm mono
Cord 39"
Driver Size 10 mm
Nominal Impedance 16O
Freq. Response 20 - 20kHz
Weight 6g
Max Power Input 5 mW
Sensitivity 104 dB @ 1kHz
Replacement Silicone Tip EAR 043 (0ne pair)

hed 021


Mono, folding headphone


3.5mm mono



Driver Size

30 mm

Nominal Impedance


Freq. Response

20 - 20kHz



Max Power Input

100 mW


110 dB @ 1kHz

Replacement Pads

HED 023 (one pair)

mic 090




15 g (0.5 oz)


3.5mm mono



Phantom Powered


Nominal Impedance

1500O @ 1kHz

Operating Voltage

1.5 - 10VDC

Freq. Response

20 - 18kHz

Pick-Up Pattern


Transducer Type

Back electret

Max Input Sound Level

110dB SPL


-56dB ± 3dB

Replacement Windscreen

WND 090

Replacement Lapel Clip

CLP 090


90 days

ppa r37 architectural and engineering specifications

  • The PPA R37 receiver shall be encased in black, PC/ABS impact-resistant plastic with a hinged battery door. The receiver shall be a body-pack style and include a detachable belt-clip for hands-free operation. The receiver shall have a 3.5mm stereo/mono jack to accommodate stereo or mono low impedance earphones, headphones and neckloops. The receiver shall have a combination volume control with power on/off rotator dial. It shall have a green LED indicating battery and system status codes. The R37 shall have access to 17 preset wideband channels between 72-76MHz. Channel selection shall be made by pushing the seek button inside the battery compartment. The receiver shall have channel-lock capability.
  • The receiver shall have a slide switch inside the battery compartment to select disposable Alkaline or NiMH rechargeable battery operation. It shall have charger contacts on the bottom of the receiver for use with Williams Sound drop-in chargers CHG 3512 and CHG 3502. The R37 shall operate up to 50 hours with two disposable AA Alkaline batteries and up to 32 hours with two AA NiMH rechargeable batteries (BAT 026).
  • The receiver shall provide a maximum out of 35mW at 16ø with an earbud type earphone. The systems audio frequency response shall be 200Hz to 15kHz ± 3dB and the signal to noise ratio shall be 65dB min. The receiver sensitivity shall be 2µV or better at 12dB Sinad with squelch defeated. The R37 shall accept up to ±75kHz FM deviation and have a 75 µ s de-emphasis time constant.
  • The R37 shall have FCC, Industry Canada approvals and be compliant with RoHS and WEEE regulations. The receiver shall be covered by a Lifetime PLUS Limited Warranty, excluding earphones, headphones and batteries.
  • This receiver model shall be the Williams Sound model PPA R37.

ppa r37

Dimensions: 4.1" x 2.85" x 1.38" (104 x 72 x 35mm)


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