ZIO Analog Bass Preamp + DI Bass it's a natural crunch that

it's a natural crunch that adds just enough overdrive to lift your bass tone to a new level of aggression

and a tuner

Adjust the amount of grit with a "set-it-and-forget-it” GAIN control located on the side of the pedal

• Quarter-turned to avoid crease down the center

ZIO Analog Bass Preamp + DI Bass it's a natural crunch thatExpertly engineered with a deep passion for monster bass tones, the ZIO Analog Bass Preamp+DI packs massive punch and flexibility in a compact and easy to dial in pedal. This ultra low noise, all analog tone shaping tool works equally well in front of your amplifier or as a preamp direct box via its balanced XLR output. High quality Burr Brown Op Amps and a straightforward yet versatile control panel deliver rich and dynamic tones with ample headroom