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Description
Williams AV PFM PRO Personal FM Listening System with Alkaline BatteriesThe PFM PRO Personal FM Listening System with Alkaline Batteries from Williams Sound delivers audio directly to the ear, enhancing sound at home, work, school, or anywhere background noise or distance from the source makes listening difficult. The system features 17 selectable channels on the 72 76 MHz band and has an operating range of up to 150 feet. A 3. 5mm jack allows for a variety of earphones and headphone options. The system is also is
The PFM PRO Personal FM Listening System with Alkaline Batteries from Williams Sound delivers audio directly to the ear, enhancing sound at home, work, school, or anywhere background noise or distance from the source makes listening difficult. The system features 17 selectable channels on the 72-76 MHz band and has an operating range of up to 150 feet. A 3.5mm jack allows for a variety of earphones and headphone options. The system is also is compatible with neckloops and telecoil-equipped hearing aids.
Specifications
Headphone
| Operating Frequencies | Selectable, 17 channels, 72.1 to 75.9 MHz Switchable 8- or 17-channel mode 8-channel mode setting corresponds with PPA R35-8 receiver channels |
| Stability | ±0.005%, frequency synthesized, crystal reference, PLL |
| Modulation | Wide-band FM, 75 kHz peak, 75 µs pre-emphasis |
| RF Output | 80 mV/m at 3 m (maximum allowed by FCC rules) |
| Frequency Response | 180 Hz to 13 kHz, ±3 dB at 1% maximum THD |
| Signal-to-Noise Ratio | 65 dB (typical), transmitted |
| Antenna | Integral with microphone cord |
| Microphone | Electret type, 3.5 mm mono plug |
| Display | OLED for status and menu information Status: Channel/Frequency, mic audio level, auxiliary input audio level, battery status, mic mute, channel lock, dual-preset modes Menu: Channel/frequency display mode select, volume, auxiliary input, compression, 17- or 8-channel mode, screen time out, screen brightness, restore default settings |
| External Controls | Momentary Push Button: Push and hold 3 seconds for power on/off, push and release for microphone mute On/Off Left, right, and menu buttons for accessing and changing transmitter settings Battery type switch (alkaline or NiMH) located behind the battery compartment door |
| Indicators | Power LED: Green, flashes when battery is low |
| Mic Input | 3.5 mm mono jack with electret mic bias, adjustable gain with 25 dB range |
| AUX Input | 2.5 mm stereo jack, adjustable gain with 60 dB range |
| Audio Compression Method | 1:1 (Off) or 2:1 (On) selectable in menu |
| Battery Type | 2 x AA 1.5 V BAT 001-2 non-rechargeable alkaline batteries, 75 mA nominal current drain, up to 30 hours battery life Or 2 x AA 1.5 V BAT 026-2 NiMH rechargeable batteries, 75 mA nominal current drain, up to 20 hours battery life per charge, recharges in 14 to 16 hours, uses CHG 3502 or CHG 3512 Charger (sold separately) |
| Enclosure Material | Shatter-resistant PC/ABS plastic with textured scratch-resistant aluminum faceplate |
| Dimensions | 4.1 x 2.8 x 1.1" (104.1 x 71.1 x 27.9 mm) |
| Weight | 2.6 oz (73.7 g) without batteries |
Williams Sound PPA R37 Select Channel FM Receiver With Earphone
Headphone
| Channels | 17, Accessed via Seek Button in Battery Compartment |
| Operating Frequency | 72.1, 72.2, 72.3, 72.4, 72.5, 72.6, 72.7, 72.8, 72.9, 74.7, 75.3, 75.4, 75.5, 75.6, 75.7, 75.8, 75.9MHz 75kHz Intermediate Frequency |
| Deviation | 75kHz |
| De-Emphasis | 75µS |
| Range | AFC Range: ±120kHz |
| Sensitivity | 2µV @ 12dB Sinad with Quelch Defeated |
| Max Input Signal | 100mV |
| Frequency Response | 200Hz - 15kHz |
| Modulation | FM, ±75kHz Peak Deviation |
| Signal to Noise Ratio | 65dB Min @ 100µV |
| Output Level | 35mW Max, Peak into 16 Ohms |
| Connectors | 3.5mm Stereo/Mono Headphone Jack |
| Earphone | Earbud Type, Foam Cushion, 32 Ohm Impedance, Standard 3.5mm Plug |
| Antenna | Uses Earphone/Headphone Cord as Antenna |
| Battery | 2 x AA Alkaline or NiMH Up to 50 Hours Life with Alkaline, Up to 32 Hours with Rechargeable NiMH Enters Sleep Mode After 6 mins with no RF Signal |
| Current Consumption | 52mA, Nominal |
| Indicators | Green Power LED (Flashes for Low Battery) |
| Temperature Range | 32 to 122°F (0 to 50°C) |
| Approvals | FCC, Industry Canada, RoHS, WEEE |
| Finish | Black |
| Dimensions | 4.1 x 2.85 x 1.38" (104 x 72 x 35mm) |
| Weight | 4.6 oz (130g) (With Batteries) 2.6 oz (73g) (Without Batteries) |
Williams Sound EAR 041 - Single, In-Ear, Isolation Earphone
Headphone
| Style | Monaural in-ear |
| Plug | 1/8" / 3.5 mm mono |
| Driver Size | 0.4" / 10.0 mm |
| Nominal Impedance | 16 Ohms |
| Frequency Response | 20 Hz to 20 kHz |
| Power Input | 5 mW |
| Sensitivity | 104 dB @ 1 kHz |
| Replacement Parts | Replacement Silicone Tip: EAR 043 (one pair) |
| Cord Length | 39.0" / 99.1 cm |
| Weight | 0.2 oz / 6.0 g |
Williams Sound HED 021 Folding Mono Headphones
Headphone
| Driver Size | 1.2" / 30 mm |
| Maximum Power Handling | 100 mW |
| Foldable | Yes |
| Audio Connector to Source | 1/8" / 3.5 mm |
Packaging Info
| Package Weight | 0.13 lb |
| Box Dimensions (LxWxH) | 6.6 x 5.05 x 2.2" |
Williams Sound MIC 090 Mini Lapel Clip Microphone
| Element | Electret Condenser |
| Pickup Pattern | Omnidirectional |
| Impedance | 1.5 kOhms |
| Frequency Response | 20 Hz to 18 kHz |
| Dynamic Range | 79 dB |
| Sensitivity | -56 dB (±3 dB) |
| Signal-to-Noise Ratio (SNR) | 63 dB |
| Plug | Right Angle: 1/8" / 3.5 mm |
| Cable Length | 39.0" / 99.1 cm |
| Approvals | RoHS |
Williams Sound AA Alkaline Battery (2-Pack)
Battery
| Battery Type | 2 x AA |
| Battery Chemistry | Alkaline |
| Battery Voltage | 1.2 V |
Williams Sound CCS 043 Leatherette Carry Case For PFM Pro, DWS Personal Communication Systems
Headphone
| Compatible with | PFM PRO or Digi-Wave personal communication systems Fits: PFM 330, PFM 360, Digi-Wave DLTs, Digi-Wave DLRs |
| Dimensions | 9.3 x 8.0 x 3.0" / 23.5 x 20.3 x 7.6 cm |
| Weight | 0.70 lb / 0.32 kg |
Williams Sound CHG 3502 Dual-Bay Battery Charger For Select Bodypack Transmitters And Receivers (Black)
Headphone
| Compatible With |
PLR BP1 Loop receiver PPA T36 Personal FM Transmitter PPA T46 Transmitter PPA R38 Receiver PPA R35-8 Receiver PPA R37 Receiver WIR RX 22-4 Infrared Receiver Motiva PFM T36 Personal FM Transmitter Motiva PFM R36 Personal FM Receiver Motiva PFM R33 Personal FM Receiver |
| Charging Time | 16 Hours (Nominal) |
| Capacity | 2 Components |
| Indicators | 2 x Red LEDs (One for Each Bay); LEDs Are Lit When Charging |
| Enclosure | ABS Plastic |
| Power Supply | Input: 100 to 240 VAC, 50/60 Hz; 6 W, 0.5-0.3 A Output: 6 VDC, 250 mA |
| Power | Charger: Input: 6 VDC, 300 mA, Center Positive Output: 100 mA per Bay |
| Batteries | NiMH Batteries Not Included |
| Approvals and Certifications | CE, FCC, RoHS |
| Dimensions | 4.9 x 3.9 x 2 / 12.4 cm x 9.8 cm x 5.1 cm |
| Weight | 1.12 lb / 0.51 kg |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 4
“Brown” floating shelves
Color: Brown, Number Of Shelves: 2, Size: 60"W x 6.5"D, Color: Brown, Number Of Shelves: 2, Size: 60"W x 6.5"D
These shelves are great, easy to install. My only complaint is the color is not quite what I expected. I ordered “brown” and they look a little more “walnut”.
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Reviewed in the United States on May 31, 2026
★★★★★ 5
Perfect shelves
Color: Brown, Number Of Shelves: 2, Size: 36"W x 6.5"D, Color: Brown, Number Of Shelves: 2, Size: 36"W x 6.5"D
Beautiful shelves and easy to put up with the rod underneath. Love the color.
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Reviewed in the United States on March 18, 2026
★★★★★ 5
Love these floating shelves!
Color: Oak, Number Of Shelves: 2, Size: 36"W x 6.5"D
These shelves are perfect for my kitchen! They were easy to install. All the hardware was included. They are durable and sturdy and gave my kitchen wall an instant face lift!
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Reviewed in the United States on April 14, 2026
★★★★★ 3
Holes in brackets are not spaced for studs!
Color: White, Number Of Shelves: 2, Size: 67"W x 6.5"D
So the quality of this not great, but good enough and they look nice enough on the wall. However, the bracket holes are not spaced at 16" intervals. WTF? I'm not sure who designed this thing. The molly plugs that came with it look OK, but to play it safe I used a cobalt steel drill bit and made my own holes in the bracket. Easy enough with some wd40. My other pick with this is that the screws to anchor the shelf to the bracket are black and and very obvious... they should have supplied some kind of cap.
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Reviewed in the United States on January 31, 2026
★★★★★ 5
Great shelving!
Color: Black, Number Of Shelves: 2, Size: 40"W x 6.5"D, Color: Black, Number Of Shelves: 2, Size: 40"W x 6.5"D
These shelves are amazing, easy to install and look very impressive! Price is good too!
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Reviewed in the United States on April 7, 2026