Zvex Sonar Vexter Tremolo/Tap Tempo Pedal

The Zvex Sonar Vexter is a tremolo and machine pulser specifically calibrated to work with higher-gain amps and give you a penetrating tremolo that will really help you stand out. Its impressively silent bypass eliminates noise typically associated with high-gain amps and a tap tempo with three different time divisions, or a Speed control if that's more your style.