The Frequency Booster

[MAO]

Project 10 from Craig Anderton's DIY Projects for Guitarists.

I added some power supply filtering and a rotary switch to select 6 different frequency boosts.

The Boost control provides 3dB-12dB boost for the selected frequency via the rotary Switch.

Rotary Sw-6 220n 90Hz bass boost (Rumble)
Rotary Sw-5 100n 200Hz low mid boost (Dark)
Rotary Sw-4 47n  425Hz low mid boost (Warm)
Rotary Sw-3 22n 1kHz mid boost (Honk)
Rotary Sw-2 10n 2kHz mid boost (Presence)
Rotary Sw-1 4n7 4 kHz upper mid boost (Sheen)