Sennheiser RS 140 RF Wireless Headphones

Sennheiser Updated: 2009-01-18 RSS
Sennheiser RS 140 RF Wireless Headphones

The RS 140 is a closed, circumaural RF wireless headphone system, equipped with balance control and switchable compression for better speech intelligibility. The headphones are able to go loud, so they are ideal if a bit of extra volume is needed, while their closed design prevents sound leakage. The system is extremely user-friendly due to its 'easy recharge' function and intelligent auto-tuning. Acoustic and visual signals confirm the adjustment of new settings. An innovative, self-learning automatic level control ensures that the headphones always reproduce an optimum audio level. The RS 140 system features an excellent sound image with outstanding bass response, making it an ideal choice for all types of music and TV use.


* Closed, circumaural RF wireless headphone system
* Excellent sound for hi-fi systems and TVs
* Switchable compression ensures excellent speech intelligibility
* Balance control for right/left volume adjustment
* Headphones are able to go loud to compensate for moderate hearing impairment
* Automatic search tuning with memory function
* Three selectable RF channels
* Optimum audio levels due to self-learning automatic level control
* Very lightweight headphones, extremely comfortable to wear
* Range of up to 150 m (864 MHz variant), or up to 100 m (926 MHz variant)
* Convenient storing and recharging function
* Rechargeable NiMH batteries included
* Acoustic and visual signals confirm the adjustment of new settings
* Operating time: approx. 23 hours
* 2-year guarantee

Delivery Includes

* Transmitter with audio cable (3.5 mm jack plug)
* Adaptor to ¼" jack plug (additional RCA phono adaptor for 926 MHz variant)
* Mains unit
* Two rechargeable NiMH batteries
* Operating instructions

Technical Data

Max. Sound pressure level (aktiv): 110 dB
Powering: 9V DC (transmitter); AAA batteries (receiver)
Weight (Transmitter): 430 g (incl. audio cable)
Weight (Receiver): 280 g (incl. batteries)
Range: up to 150 m (for 926 MHz up to 100 m)
Modulation: FM Stereo
Signal-to-noise ratio: > 68 dBA
RF frequency range: 863 ... 865 MHz or 926 ... 928MHz
Dimensions (Transmitter): 85 x 225 x 133 mm
Frequency response (headphones): 18.....21000 Hz
Transducer principle: dynamic, closed
Operating time (Accupack): 20-25 h
THD, total harmonic distortion: < 0,5 %
Jack plug: 3,5mm / 6,3 mm stereo (863-865 MHz), cinch (926-928 MHz)