For me, these overdrives are harsh, fizzy and unnatural on the GT-3. The later GT models were supposed to have been improved. Some people claimed to have better results using the four-cable method. The GT-3 does have an input for an external overdrive, which helps. Thanks to its flagship-class GT sound engine, the GT-1 provides tone quality and sound-shaping ability that far exceeds typical compact multi-effects. A history of BOSS processing is at your fingers, from classics such as the OD-1 Overdrive to modern effects powered by innovative MDP technology. Turn up the volume, bring on that strum, and pump the pedal with your very own Boss GT-3. This Boss guitar pedal comes with a COSM preamp, giving you vintage and guitar effects with a speaker cabinet and microphone simulation. This booming COSM effect pedal gives you a total of 32 effects, and 12 distortion and overdrive effects. The free BOSS Tone Studio software provides a full-featured editor/librarian for the GT-1, as well as integrated access to all the patch collections at BOSS Tone Central. Maximum Control in a Small Space. The GT-1’s three footswitches are smartly designed to provide patch selection, tuner access, looper control, and more in a minimal footprint. The Boss GT-3 is a discontinued multi-effects pedal with 32 modeled effects from Boss' COSM engine. Its current successor is the GT-6.