The Boss SYB-5 is a synthesizer single effect pedal. The eleven sounds contained in this pedal are all based on 3 oscillator sound waves, namely the Saw, Square and the Pulse. The SYB-5 uses DSP technology that reproduces the low, deep and sharp sounds of classic analog synthesizers. The filters will modulate based on the Envelope and LFO changes you make. The Boss SYB-5 is a very versatile pedal with an extra input to connect a control pedal, for example, this way you can now get even more out of this single effect pedal.