Convert a stereo rca audio signal to digital coax and toslink the aa2spdif stereo rca to spdif digital coaxial and toslink audio converter lets you convert or split your analog stereo audio into 2 channel digital coaxial and toslink output signals perfect for many home and professional audio applications this rca to digital audio converter saves the cost of upgrading equipment for compatible connections by offering a separate digital coax and toslink output for added versatility the dev