Based on the EQD Acapulco Gold with an optional pre-gain mod.  The Dirty Aztec is a super distortion board based of the sound of a cranked vintage Model T amplifier. The original version came with just one dial...volume...and by god - this thing is loud!!! So, we added an optional "pre-gain" pot. This replace the volume pot on your guitar, allowing you to control the gain - again, this is an optional extra and if you want to build the board without it - just jumper it!

The tone is set with your guitar, so if you want a darker, moody, doom sound...roll down the tone knob on your guitar.