The BPA54 is a standalone rear panel intended for use with Wisycom MCR54-series receivers. It provides one Hirose connector for external power and two mini XLR-5pin male outputs, supporting four analogue channels or four digital AES channels. The module is designed for rear-panel integration with MCR54 and MCR54-DUAL units, enabling compact, field-ready setups with reliable, locking connectors. It supports 19-inch rack installations and uses shielded signal paths for durability in mobile and fixed installations.