Here for sale 2010s Tech 21 Fly Rig 5 Cali Multi Effect - Silver/Blue. It's in very good condition and comes as pictured. The CALI’s distortion section is based upon the CALI/US Metal SansAmp Character Series pedals, which were inspired by amps in the mid ‘70s from the then-boutique shop over on the West Coast. While those hulking stacks are known to sound best at ear-bleed levels, the CALI section can painlessly transform your sound at the kick of a switch. You can completely change the personality of a clean amp tone or use it as an instant mod with a dirty amp tone. Engaging the Boost function is like having an extra “12AX7” pre-amp gain stage. Activated via its own footswitch, you can kick in up to 21dB of pre-amp boost. The range allows you to go from a state of mild overdrive to insane gain. Boost also operates independently to punch up any of the other functions.