: It usually features 40 channels summing out to 8 buses, making it a capable front-end for modern DAW setups or high-end analogue summing. Power Supply Specifics

The AMEK 501 Langley is an in-line console. This means each channel strip contains :

Designed by Graham Langley around 1993, the Amek 501 is a versatile, modular analog console suited for live sound, studio, and broadcast applications. It features high-quality microphone preamps, the "SuperTrue" automation system, and an optional "Vocal Recall" system. Technical documentation and manuals for the console are available through specialized audio archives [Link: Audio Maintenance Limited https://www.audiomaintenance.com/acatalog/manuals.html]. AMEK 501, BIG, RECALL Contributions and Info - Gearspace