Portta Digital Optical Audio Switcher 4x1 SPDIF Toslink Switch Box with IR Remote Control 1:1 Transmission for Apple TV/Xbox/Blu-ray player/Sound Bar/Receiver/Speakers/DVD Player/Amplifier Portta Audio SwitcherThis SPDIF/Toslink digital optical audio switches easy to use:plug & play,support signal re-timing,Built-in automatic balance system, make the signal transmission smooth, stable. Built-in ESD electrostatic protection circuit, all-round protection system security Remote Control IncludedSupport manual & IR remote control switching, switcher external IR Extender Receiver, comes with a handy, intuitive remote which makes switching inputs, outputs, and audio channels easily and conveniently,support last time working state memory when power off Lossless Signal TransmissionTransmission distance up to 40m via optical fiber cable that losses less than 0.2dB/m,sampling frequency up to 96 KHz. HD audio formatsSupport uncompressed audio:LPCM 2.0,compressed audio: DTS, Dolby Digital,No distortion of audio or video, no delay in signal transmission Package ContentsPortta 4x1 Toslink Switch _ x1, USB Power Cable x1,Remote Control x1,IR Extender Receiver x1, User Manual x1, Warranty Card x1(5 Years Worry-free Warranty)