Behringer Digital Multi-Fx FX600 Stereo Effects Pedal.

The Behringer FX600 is a compact, entry-level digital multi-effects stompbox designed for electric guitars, basses, and keyboards. It packs a 24-bit high-resolution stereo effects engine that delivers six studio-grade modulation and time-based effects in a single unit: Flanger, Chorus, Phaser, Delay, Tremolo, and Pitch Shifter.