This pedal offers the combination of a simple dynamic overdrive and an independent clean boost circuit all in the one pedal. Warm sounding classic' overdrive that adds sustain and punch. Boost function with adjustment from 0 to 20 dB of clean, uncoloured boost. Cleans up nicely when you roll back your guitar volume making it extremely responsive to picking dynamics without thinning out your tone. True hardwire bypass. Powered by 9 volt battery or AC adaptor (ECB003).