Used Catalinbread VariOboost Preamplifier Guitar Effects Pedal 12 outputs a switch-mode power supply converts

a switch-mode power supply converts the incoming 9 volts to 55 volts and applies that higher voltage to the vacuum tube's plate—just like an amplifier

Auto Mode – Program dependent Attack and Release times

5 mm) Mini Headphone Output With Headphone Level Control

sample loops

High-fidelity Preamp

Used Catalinbread VariOboost Preamplifier Guitar Effects Pedal 12 outputs a switch-mode power supply convertsMint, all original packaging, as new From Catalinbread: One of our most requested legacy reissues has arrived! The VariOboost is one of our oldest pedals, with a lineage that nearly reaches the beginning of our timeline. The original delivered 12 decibels of boost or cut at a user selectable frequency from 70Hz to 1. 4KHz, with some additional gain piled on top for a truly stellar boosting experience. This device was loved by players of all stripes,