API 550B

7 switched frequency centres per band, fully discrete, click detente in 2 dB steps with 12 dB boost or cut, hi and lo shelf switches, unique proportional Q, high headroom, silent bypass.

This is the EQ fitted to all large format API consoles. +4 balanced XLR I/O.

"I can see why these eqs should be so highly prized, the sound is quite special" - Dave Foister. Studio Sound, February 1996.