The BB Preamp achieves a wide range of tones, with adjustable volume and bass. - Model Name: BB Preamp - Color: Red - Brand: Xotic Effects - Number of Knobs: 4 - Features: Bypass Switch - Input/Output Terminals: Input/Output - Adjustable Parameters: Volume, Bass, Treble, Gain Includes box. I'm selling it because the noise bothered me and it didn't suit me. No returns or exchanges, please. Thank you for looking.