An optional output board that handles 17 AES/EBU audio (unbalanced) signals. It supports 48-kHz sampling frequency synchronized with the reference word sync signal. As the IXS-6700 can accept up to eight IKS-A6062 boards, the number of outputs can be expanded from 17 to 136, in units of 17. As the IXS-6600 can accept up to four IKS-A6062 boards, the number of outputs can be expanded from 17 to 68, in units of 17.