Original knob from the Big 2400 mixer but were widely used in the very early
Soundcraft desks and are rare now.
So far they are used in the series 2400, 800 and on the Soundcraft 760 remotes
These desks ha very good EQ,s in and now with the advent of modern low noise op amps they are being revamped are really sound great
ok size 14.25mm high
13.87mm wide at widest point its a d push on looks like 4mm
I have these in different colours price for 1