Seat turns it up to 11 with Cupra ST

During the course of this, DiBergi notices that Tufnel’s Marshall amplifiers are all calibrated for volume from one to 11, instead of the usual 10. He quizzes the guitarist on this and what follows is piece of movie magic as Tufnel extrapolates the reasoning behind the adapted amps.
Asked if it makes the band’s music any louder, the guitarist responds thus: “Well, it’s one louder, isn’t it? It’s not 10. You see, most blokes, you know, will be playing at 10. You’re on 10 here, all the way up, all the way up, all the way up, you’re on 10 on your guitar. Where can you go from there? Where?”