The Lighthouse boost from Seafoam Pedals is truly dynamite in a small package. It features 9 different boost settings via two 3-way switches for a huge variety of boost, drive and tone-shaping options.
The "Type" switch is for (1) clean boost, (2) dirty boost, and (3) nasty boost. This allows you to either achieve a clean volume bump or dial in some gain thickness that a clean boost by itself just can't provide. The dirty and nasty boost settings are blended with the clean tone so your guitar and amp's natural tone isn't masked, just supplemented with smooth overdrive. The "Tone" switch is for (1) full boost, (2) mid boost, and (3) treble boost. The sound of a tube amp tends to change as it's boosted into, so these tone-shaping options really help you dial in the perfect sound. All of these features together in such a small box gives you a variety of great tonal options with room to spare on your pedalboard!