Tsakalis Audio Works Riff Raff MKIIRiff Raff MKII Dual Overdrive The Riff Raff is a smooth and creamy asymmetrical silicon overdrive pedal. Two channels, with independent Volume and Drive controls, sharing one versatile tone control. Channel 2 has a dedicated gain boost switch, delivering more gain and punch, making it even rounder and more satisfying. Fully detailed, rich and beefy tones render this pedal perfect for every style, delivering the mojo of a vintage TS with a modern