The stompbox OD with the great big head.
Improving on their own standard-setting OD808, Maxon has added unique voltage-doubling circuitry for greater headroom. It's the smoothest, warmest, most transparent overdrive Maxon has ever produced. Reacts precisely to every picking nuance and playing dynamic. Features true-bypass switching. Drive, tone and level knobs for precision tone control. Uses 9-volt battery or AC adapter (sold separately).