The EHX Bass Mono Synth transforms your bass into eleven great sounding synthesizers — from vintage synth emulations to thick, stacked voices to deep pulsing sounds, and much more. An intuitive layout makes it easy to use and easy to dial in good sounds quickly. There’s also an EXP input which lets you control some parameters in real-time with an expression pedal (not included). Using the built-in Preset footswitch, a user customizable preset for each of the eleven synth sounds can be created, saved, and recalled.