The TC Electronic Spark Booster has 3 different modes, Clean, Fat and Mid for totally different types of boost. The Clean is obviously a clean boost, the Fat and Mid have slightly different EQ characters and help push a clean amp into overdrive or create a solo tone from a crunch tone.
Signal chain is Taylor SB2-S into the TC Electronic Spark Booster into a Ceriatone Chupacabra 50 with a Strymon El Capistan in the effects loop. Single Audix i5 Mix on the cab which is loaded with an Eminence Governor speaker. http://www.guitarnoize.com/
TC Electronic Spark Booster Demo