OPTICAL SPLITTER 1 IN 3 OUT: Toslink fiber optic audio splitter allows you to connect one optical audio source and split it into three receiving devices such as A/V receiver, Bluetooth transmitter & Sound bar AUDIO FORMAT: Supports Digital 5.1CH Dolby-AC3, DTS, PCM, LPCM2.0, ADAT, 32kHz, 44.1kHz, 48kHz and 96kHz. NOTE: It does not support 7.1CH Dolby Digital Plus, Dolby TrueHD because 7.1CH audio cannot be transmitted via fiber optic cable