For a funky feel using filter effects, the Electro-Harmonix Q-Tron is the perfect fit with its high pass, band pass, and low pass filters, dial-in sweep directions, changeable resonance, and auto-wah effect. Whether playing on a bass or guitar, this pedal's wide-ranging controls allow you to create the subtlest filter modulations or sweeps that turn your guitar or bass into a synthesizer. This touch-responsive, versatile filter pedal is your next step on the way to some seriously groovin' sound.