The Sabotage PCB is based on the Catalinbread circuit but with a few tweaks. Controls are Gain, Presence, and Volume for different amounts of crunch as you would expect from a Laney™ style rig and perhaps most importantly for tone shaping is the inclusion of the Range knob that provides an amazing diversity of heavier tones. The Range control is variable to match whatever range tone you seek (Classic Treble Boost, Treble w/ Mids, Full Range w/ Tight Bottom, or Full Range Heavy Lows).