The Series 6385 Encoder encodes stereo audio signals into the BTSC multi-channel television sound format. The encoder uses the dbx noise reduction system as required by the BTSC standard. The Model 6385 Encoder accepts discrete left/right stereo and/or SAP audio as standard inputs. Available outputs include a wideband BTSC encoded baseband signal and a 4.5 MHz subcarrier for use with a wide variety of video equipment.