Wiistar RCA Analog to Digital Optical Toslink Coaxial Audio Converter Adapter with Power Adapter Converts analog L/R signals to digital S/PDIF or TOSLink. Both TOSlink and Coax digital outputs may be used simultaneously Digital audio cable length can run up to 15 feet without signal degradation. Supports output sampling rate at 48KHz Supports uncompressed 2-channel LPCM digital audio signal output Provides electromagnetic-noise-free transmission Easy to install and simple to operate