DLS has created this rotary speaker simulator and made sure this pedal has all the adjustments any musician could want to dial in any type of rotary speaker cabinet sound imaginable. The Tweeter and Bass adjustments allow you to add or reduce the amount of horn intensities. Fast and Slow speed panel pots allow the rotation speeds to be dialed to taste along with the Ramp time. Use this effect with or without our internal overdrive circuit which simulates clipping like the real deal. Internal trim pots let you adjust the Blend, Bass Lag Speed, IO Volumes, and more! This unit uses the analog instrument signal and mixes it with the RotoSIM sound this leaves your instrument sound and tone as is!