Add to cart COLOSSUS €251.00 COLOSSUS! BY RUBEN BLOCK and DR. NO. A TWIN PEDAL WITH A HIGH GAIN GRITTY BOOSTER AND A OCTAVIA. COLOSSUS IS HERE! The COLOSSUS was developed in close cooperation with Ruben Block to broaden its famous and signature sound, that is now also available for the heavy minded Boutique Guitar Effects lovers. The COLOSSUS has been used and can also be heard on Triggerfinger’s latest album with the same title, COLOSSUS.