A3 Stompbox

A3 Stompbox creates boutique pedals and custom tone tools for players who want premium feel, smooth control and hand-built character. Based in South Korea, A3 Stompbox is especially known for custom volume and expression pedals, along with analogue effects and pedalboard solutions designed for serious guitarists and bassists.

Whether you are looking for a smooth volume pedal, precise expression control, a custom pedalboard-friendly utility pedal or expressive analogue tones, A3 Stompbox focuses on practical performance, quality components and player-focused design. Their pedals are built for musicians who care about feel, reliability and how each part of the rig responds under the foot.

Explore our A3 Stompbox collection at Gsus4 and find boutique pedals, expression pedals and custom control solutions designed to give your rig a more refined, professional playing experience.