Monster Effects
Monster Effects is a North American boutique pedal maker, handcrafting bold, amp-like distortion and tremolo pedals like the Mastortion (a monstrous high-gain drive co-designed with Mastodon’s Brent Hinds) and the Swamp Thang tremolo, a faithful Fender‑style circuit in a compact enclosure. Known for rugged build, massive tonal impact, and niche creativity, their pedals are favoured by heavy-hitting guitarists seeking raw, powerful sound in a stompbox-sized package.
One-of-a-kind gear lands every week. Browse the latest arrivals while they’re still available.
Every preloved piece is serviced, repaired if needed, and tested by our techs before it goes on sale, with a warranty.