A study on the usefulness of this product in providing entertainment/joy. 

The Sennheiser Wireless Listening System remains an anomalous device, the function of which has remained unclear. Here, we demonstrate that the Sennheiser system can be used to listen to one's television from several feet away, increasing entertainment and joy.

We attached the Sennheiser Wireless transmitter to the "audio out" jacks of a 42" standard consumer television. We then asked several subjects (n=4) to "put on" the stethephone receiver, placing the device into the ears. The receiver was kept within sight-line of the transmitter. The television program "Wipeout" was shown on the television. Subjects were asked whether they (a) heard the program, and (b) whether the sound quality was sufficient for entertainment/joy.

100% of respondents (4) claimed that they heard the television program "Wipeout" on the stethephone receiver, indicating that the audio signal was successfully transmitted. Furthermore, 100% of respondents claimed that sound quality was sufficient for entertainment/joy.

The Sennheiser Wireless Listening system was shown to transmit audio from a television to a set of wireless stethephones. The method by which this transmission takes place remains unclear, but may involve infrared signal. This causal pathway should be explored in future studies. This study also revealed that listening to the television show "Wipeout" produces entertainment/joy, although this phenomenon remains largely inexplicable.

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The DirectEar SET 100-J mono system consists of an infrared transmitter and receiver that
permits cordless television listening without disturbance to others. The transmitter connects
directly into the audio output of a TV, VCR or compatible audio source. A high quality audio
signal is transmitted on the 95 kHz infrared carrier frequency to the stethophone receiver.

  • Ideal for older parents or hard of hearing to hear dialog on TV or at hundreds of specially equipped cinemas, theaters, workshop sites, and museums across the country
  • Compatible with television sets and other audio sources
  • Stethophone mono headphone receiver, with infrared transmitter for cord-free listening
  • Can be connected directly into the audio output of a TV, VCR or compatible audio source
  • Excellent sound quality
  • Sufficient radiating power for rooms up to 435 square feet
  • Headphone incorporates volume, left/right balance and tone controls
  • Lightweight headphones
  • Convenient interconnectivity
  • Controlled from a single location
  • Easy to install
  • Excellent reliability

Shipping Note: Eligible for shipping to all 50 states

Warranty: 2 Year Sennheiser


Modulation: FM
Carrier Frequency: 95 kHz
Frequency Range: 30 - 18,000 Hz
THD: 1% (typical)
S/N Ratio: 65 dB(A) (typical)
Power Requirements: 3 VA
Broadcast Distortion: 435 square feet
Weight: 2.8 oz
Modulation: FM
Carrier Frequency: 95 kHz
Frequency Range: 30 - 18,000 Hz
THD: 1%
S/N Ratio: 65 dB(A)
Operating Time: Up to 4 - 6 Hours
Charging Time: Up to 14 Hours
Sound Pressure Level: 124 dB
Weight: 1.4 oz


In the box:

  • Sennheiser SET100-J Wireless Personal Infrared Listening System
    • TI 00 Transmitter
    • RI 100-A Mono Stethophone Receiver with 2.5mm mono Output Jack to accomodate hearing aid accessories such as neckloops, silhouettes and direct audio input
    • AF Connection Cable with 1/8" Jack and RCA Coaxial Adapter
    • BA 90 Rechargeable NiMH Battery
    • AC Adapter

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Sennheiser Wireless Listening System
$49.99 Sold Out Electronics
$49.99 USD false 1 Retail EA
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Woot! Electronics.Woot
4121 International Pkwy Carollton TX 75007 U.S.A.