1x XLR 3-Pin AES3/S/PDIF Input (Digital),2x 1/4" TRS Line Input (Balanced, 1 Stereo Pair),1x RJ45 Coaxial AES3 Input (GLM Network),1x XLR 3-Pin AES3 Output (Digital),2x 1/4" TRS Line Output (Balanced, 1 Stereo Pair),1x 1/4" TRS Headphone Output,1x RJ45 Coaxial AES3 Output (GLM Network Terminator)