Like new EBS Multicomp compressor, newer true bypass version. Used for a few months, not in a band currently so I don't need it. Warning: once you turn it on you will NEVER want to play without it! The tubeism mode was my favorite, adds a little brightness and fatness to fingerstyle, the dual band was best for slap. It has a slow engage rate so it enhances each note and gives you more definition. More rock and punch than fat and chewy. Sell for $110 shipped or trade for a Sansamp BDDI.