Sennheiser’s RS 175 wireless radio frequency headphone system offers an impressive range of features that allow you to experience extraordinary home entertainment! The customizable sound adjustments have dynamic bass boost which increases the audio bass of your music, while the two virtual-sound listening modes offer a more spatial and livelier stereo sound of your television’s surround-sound. In addition, the innovative digital wireless RF technology ensures that signal transmission remains clear and accurate of up to 328 feet, allowing for freedom of movement from room to room. The main controls are located on the close-fitting headphones, so nothing will distract you from an exciting audio experience, and the comfortable fit is ideal for long periods of use. The transmitter also supports adding an extra headphone receiver (HDR175) for another listener. (sold separately)