The is a professional analog mixing console designed by Graham Langley . Primarily intended for Front-of-House (FOH) and live sound reinforcement, it is frequently used in recording studios for its high-quality preamps, musical EQ, and flexible output options. Console Architecture & Modules
It is possible you are referring to one of the following: Amek 501 Langley Manual
| Band | Type | Frequency range | Gain/Attenuation | Q | |------|------|----------------|------------------|----| | LF | Shelving | 40, 80, 160 Hz | ±15 dB | – | | LMF | Peaking | 150 Hz – 2 kHz | ±15 dB | 1.2 (fixed) | | HMF | Peaking | 800 Hz – 12 kHz | ±15 dB | 1.2 (fixed) | | HF | Shelving | 5, 10, 20 kHz | ±15 dB | – | Amek 501 Langley The is a professional analog
Users describe the 501’s sound as "punchy," "warm," and "forgiving." It became a staple in project studios and regional recording facilities throughout the UK and Europe during the late 1980s. However, unlike the mass-produced Mackie or Behringer desks of later decades, the 501 was hand-wired and highly modular. This leads to the first major challenge: maintenance. However, unlike the mass-produced Mackie or Behringer desks
: The console is built using individual channel strips (such as the RL1 mono channel), allowing for easier maintenance and per-channel repairs. Technical Specifications
: Typically found in 40-channel or 56-channel configurations.