Guitar pedal effect - overdrive. Ever since the 1970s a small, green Japanese overdrive pedal has been a major part of almost every pedalboard. From blues rockers like SRV and John Mayer using it as the main part of their sound to massive metal artists like Kirk Hammett using it to push an already hot amp into massive sustain, everyone needs a screamer on their board. Over the last 40 years there have been hundreds of models from different brands, some more original than others. But with so much choice it can be really hard to find the one that is right for your rig. That is no longer a problem thanks to the JHS Bonsai a 9-way TS style pedal that has perfect replications of 9 different screamer pedals in one.