This is a 10 band EQ module. Bands are spaced an octave apart ranging from 30hz to 16khz, each can cut or boost 12db. Zener diodes can be switched into the circuit to limit the output level and provide soft harmonic distortion.

Demos, build documentation, drill guide, are available here.

Unfinished panels are drilled by hand in my garage, they are bare aluminum that may be scratched.  They are intended to be painted, etched or otherwise finished later.

Pre-Assembled Modules are built after the order comes in.  Build time can be a few days or a few weeks depending on what parts I have on hand.  When ordering, please leave a comment at checkout if you have preferences on what color(s) the panel is painted.