The transmitter that comes with the headphones and enables their wireless transmission incorporates Sony VPT Virtual Phones Technology with advanced level 125MIPS (125 million instructions per second) Logic 3D Processor to provide richer and more natural sound quality, and weightier, more substantial bass sounds to enhance the sound's live presence. There's even a Decode-Mode indicator on the front which visually indicates when the system is in Dolby Digital, Dolby Surround, or DTS mode, and provides a snazzy, stylized representation of the virtual speaker placement relative to the listener. The optical digital input allows you to use the phones with Dolby Digital and PCM audio-enabled devices, and its gold-plated analog input provides noise-free Dolby stereo and pure stereo sources from external devices.

For you audiophiles out there, please note these phones sport a fifth order Delta/Sigma A/D converter that uses 64X over-sampling for high precision audio, as well as a multi-level Delta/Sigma D/A Converter that achieves 18 bit resolution. There's also SILMIC Electrolytic capacitors at the analog stage, for more natural sound, and the copper board traces are literally twice as thick as conventional designs, giving you higher conductivity.

The phones sport a high power infrared transmitter with separate FM carriers for wide bandwidth, and high channel separation, and its 90-degree transmission angle further enhances your ability to enjoy uninterrupted surround sound listening without pinning you down to one spot. You'll get superb transient response with the long-stroke 12um polyester film diaphragms: the new diaphragm shape resists bending and flexing to provide low levels of distortion. Plus, the oversized 30mm diameter drive units are larger than most headphones, for noticeably deeper bass sounds.

The built-in Dolby Pro Logic II decoder unlocks any Surround Sound tracks included in traditional VHS Hi-Fi, and stereo TV, sources to provide the maximum "live" entertainment experience available even here. Built in Dolby Digital, Dolby Pro Logic II and DTS 5.1 Decoders reproduce all popular surround sound systems, including state of the art 5.1 channel sound as well as Digital Theater Systems surround sound. Headphone functions include automatic On/Off, volume control, muting, power save, and the ability to recharge on the base.

What's in the Box
Headphones, processor, stand for processor, AC power adapter, rechargeable NiMH batteries, optical digital connecting cable (Toslink to Toslink)