Deluxe double 180gm white vinyl pressing in gatefold sleeve. In 1986, Judas Priest intended to record a double album called Twin Turbos of which half would be lighter, more commercial Rock, and the other half would be similarly polished but heavier and less synth-driven. As it happened, record labels being notoriously timid about double albums, the project was split into two releases, with the more commercial Twin Turbos material being relegated to Turbo. The album marked the band"s first use of guitar synthesizers. Back On Black. 2010.