The Marshall JH-1 Jackhammer dual-mode guitar effects pedal is an incredibly versatile analogue dirt box that delivers classic Marshall amp tones in a stompbox format, ranging from subtle crunch to extreme high-gain metal.

The pedal features two distinct modes—Overdrive (O/D) for classic dynamic crunch, and Distortion (Dist) for modern, aggressive high-gain sounds. Thanks to its dual-concentric pots, it packs powerful tone-shaping options (including a sweepable frequency Contour control to scoop your mids) while saving valuable space on your pedalboard.