There aren’t many effects that have stood the test of time better than the tremolo. Born in the 1950s and first used in surf music, this dynamic amplitude-bender has spread to just about every style you’ll want to play. Tremster is a gorgeous-sounding, full-featured tremolo that delivers loads of classic T-Rex tone. You might not use it on every tune, but when you do kick it on, it will utterly transform your sound – adding that strange, swampy pulse that only a great tremolo can deliver.