If you're after a streamlined decibel bump that also packs plenty of features for tonal sculpting, consider the SolidGoldFX Nitro Boost. Built with a single knob for volume, the ace in the hole for this pedal is a set of three-position switches: Mode and Tone. The first toggles between a straight Clean boost, slightly gain-y Crunch, and a grit-tinged Dirty setting, while the Tone cycles through a full-range color, top boost bite, or flat EQ.