There's more than one way to turn a guitar into a synthesizer. But Boss and Roland have always gone for the most elaborate and complicated approach. While the new SY-1000 can be played simply by plugging in a guitar or bass via a standard 1/4-inch instrument jack, it really shines when connected via Roland's proprietary GK pickup. Unlike a lot of other guitar synth pedals, the GK pickup system allows for polyphonic tracking of notes on a guitar without the use of MIDI, which can be a little unreliable. The SY-1000 builds on the tech in the SY-300 which turns your guitar licks into everything from a gnarly synth lead to a rich pad, or even a thick Leslie-like organ.