The MK.4.23 gives you from zero to +24dB of crystal clear boost to dial in to your liking. Noiseless boost with no signal distortion, zero tone coloration and quiet switching when you engage the circuit. YOUR TONE, only more of it without adding the noise typically associated with an increase in gain.

9V power supply required.

For Guitar and Bass

Hand wired and built in the U.S.A.