From Our Research Team:

Powerful Overdrive, Compression, and Tone-shaping for Your Bass
The EBS Billy Sheehan Signature Drive pedal for bass guitar brings you aggressive overdrive, built-in compression, and incredibly flexible effects loops for fine-tuning your sound. Separate level controls for your Clean and Overdrive tones let you maintain the clean, solid thump of your low end while adding overdrive, which maintains your note definition. And the Billy Sheehan Signature Drive also has effects loops for both your clean and overdrive tones, so you can add effects to one and not the other. You may not want to play another gig without the EBS Billy Sheehan Signature Drive bass pedal!

EBS Billy Sheehan Signature Drive Bass Overdrive Pedal Features:
Flexible overdrive/compression pedal designed in collaboration with Billy Sheehan
Maintains thump and note definition by blending clean signal with overdriven signal
Built-in compressor has three modes so you can find the ideal response
Use Y-cables (not included) to add effects pedals to the overdrive and clean signals separately
Internal trim pots adjust compressor threshold/ratio (when used in Mid mode)
Uses 1 x 9V battery or optional adapter (sold separately)