Quadra is a concept album built around the number four. Taking the quadrivium as its starting point, the band split the twelve songs into four blocks of three, moving from straight-ahead thrash through rhythmic, Brazilian-tinged material to instrumental and melodic pieces. It was recorded at Fascination Street Studios in Sweden with producer Jens Bogren and released on 7 February 2020 through Nuclear Blast. It charted in seventeen countries, the band's best showing since Against in 1998, and turned out to be their fifteenth and final studio album. This edition is a 2-LP picture disc in a gatefold sleeve.