Here's the electro harmonix Bass Metaphors preamp pedal. Great sounding bass preamp with on board EQ, distortion channel, and on board compressor. - 2 separate outputs gives you the ability to run 2 amps clean / dirty - drive the input of a bass amp - also works great for recording with an XLR out - works great as a bass distortion pedal, you can use the dry knob to dial in some clean bass on top of the distortion for no bottom end loss. Internal dip switches are for the compressor settings which enable you to tailor the comp from mild to full squish. Works perfectly. These are discontinued and getting rare. 100$