The versatile, pocket-sized Korg PX4 Multi-Effects Guitar Effect Pedal packs in functionality of guitar and bass into a single unit. Korg PX4 Multi-Effects effect pedal provides 158 sounds effect from vintage amps, cabinets, and realistic effects to sophisticated effects. With a knob-based interface, the Synthesizer features a backlit LCD screen making it easy-to-handle. Korg PX4 Multi-Effects effect pedal has a built-in phrase trainer helping you learn by listening. The Synthesizers bass canceller function helps you play and hear your own bass by canceling external audio bass. It has built-in rhythm patterns including rock, jazz, funk, blues, and dance music. Korg PX4 Multi-Effects Guitar Effect Pedal with quality sound and compactness can be used for recording and live performances.