Sennheiser RS Range State-of-the-art technology - great sound - sleek designs RS 160 closed-back transportable - £139.99 RS 170 closed-back home Home Cinema - £179.99 RS 180 open-back home Hi-fi - £219.99 For Hi-fi or Home Cinema, Sennheiser Hi-fi transducers with powerful neodymium magnets ensures clear, high-resolution playback and the Kleer transmission technology delivers uncompressed lossless transmission of the audio. The headphones themselves differ in their coupling to the ear. The 160 and 170 have a closed, circumaural design for private listening, the 180 is an open, circumaural design for the very best sound. Lossless uncompressed wireless Sennheiser is using new KLEER wireless technology that transmits at 2.37MB/s peak bit rate and is able to carry full CD-quality stereo audio, without lossy compression. Additionally, this system has unprecedented immunity to interference in the increasingly crowded 2.4GHz band and offers ultra low power consumption. High-quality sound in the living room (or garden) Tried and tested Sennheiser audio technology ensures transparent and balanced sound and all three headphones have outstanding dynamics. - Sennheiser Audiophile-grade drive units and design - Full-bodied and detailed sound - Adaptive baffle damping ensures a consistently powerful bass response. - High power Neodymium-Iron magnets give high-efficiency and sensitivity - Low distortion of only 0.5 percent - Frequency response from 18 to 21.000 Hertz The 2.4-gigahertz digital radio ensures smooth transmission with a high signal-to-noise ratio. The Kleer technology delivers uncompressed sound, is almost immune to interference and allows the sharing of up to four headphones via one transmitter. RS 170 for Hi-fi and Home Cinema and for privacy - £179.99 This a closed model and features switchable 3D Surround and Dynamic Bass making it particularly suitable for movies and TV listening. The multi-purpose transmitter functions as an easy-charge cradle and docking station. RS 180 the best sound in the home - £229.99 The top-of-the-range model is targeted at audio purists the open design ensures a particularly natural listening experience which can be set to individual preferences. The speech intelligibility can be improved through dynamic compression (Auto Level Control) and the balance can be individually adjusted. Base Specifications - All Models - Frequency response - 18 - 21,000 Hz - Total harmonic distortion (THD) - < 0.5% (1 kHz, 100 dB SPL) - Sound pressure level (SPL) - 110 dB - Battery life - Over 15 hours - Global warranty - Two Years Lower latency Kleer’s highly efficient and extremely fast channel switching and use of lossless audio transmission, minimises amount of audio buffering, This makes the RS series a good choice for video as there are no lip-sync problems