The Black Lion Audio PBR8500 is an 8-slot 500-Series rack and power supply designed for professional audio signal processing. It features a patented patch bay that allows for flexible signal routing without the need to physically rearrange the modules, enabling users to dynamically adjust the signal flow. Housed in a 3U rack-mountable chassis with a width of 19 inches, a height of 5.25 inches, and a depth of approximately 8 inches, it supports eight standard 500-Series modules and is suitable for both studio and mobile applications. Constructed from durable materials, the unit ensures reliable performance and stable power supply, minimizing noise and interference for high-quality audio processing. The design emphasizes user-friendliness with clear labeling and robust connectors that withstand frequent use. Weighing in at about 10 lbs, it combines portability with stability, making it ideal for technicians and producers seeking efficient workflow integration. This successor model to earlier versions incorporates enhanced routing capabilities and improved build quality, focusing on practical benefits such as reduced setup time and expanded creative possibilities. It is compatible with a wide range of 500-Series hardware, supporting various processors like EQs, compressors, and preamps, and is built for long-term reliability in demanding audio environments.