The 7630 Encoder sub module option supports Dolby E signals. The 7635 Encoder sub module option supports Dolby D and AC-3 signals. The 7630 or 7635 fits onto Avenue modules that benefit from comprehensive audio handling. In addition to the hardware sub module, a unique software key is provided for activation. The 7630 or 7635 encoder is fed from selected outputs of the main module’s channel mixer and shuffler. The resulting encoded bitstream can be output both on an AES output and embedded into the SDI output.