Earlier this week, headphone designers Skullcandy released the third installment in its Supreme Sound series of limited-edition 12″s featuring a trio of songs from Robot Koch. The German producer’s contribution serves as the Berlin chapter of the series, after previous installments from Onra and then Deft and fLako represented their respective cities of Paris and London. Pulled from the series’ most recent 12″, this collaboration between Koch and fellow Berlin producer Sieren is a slick slice of Brainfeeder-esque beat music, one which pairs a driving bassline with the busy, lush production qualities that have characterized Koch’s work over the years. The two remaining featured on Koch’s Supreme Sound‘s 12″ can be streamed in full after the jump.