Guyatone SV-2 Slow Volume Swell Micro Series Rare Guitar Effect Pedal MIJ Japan

The Guyatone SV2 Slow Volume is a simple, powerful "attack delay" pedal that swells up your volume for a dramatic effect. Similar in action to a couple long-out-of-production pedals, you simply set your threshold for how hard or soft you're picking or strumming, then dial in the speed at which you'd like your sound to ramp up.