Helena Hauff and F#X finally unleash their second record as Black Sites. Returning to PAN following 2013’s Prototype EP, the two hardware fetishists and resident DJs at Hamburg’s iconic Golden Pudel club turn out two cauterizing, long-form acid/techno cuts on Unit 2669 EP.

A-side “Unit 2669” is built around a narcotic, modulated 303 line and protean drones, while on the flip, “Москва” is an exercise in tape manipulation and visceral mechanics; with its circuitry corroded by parasites, the track’s lurching pulse of paranoid sirens is eviscerated by surges of tearing feedback.

The 12″ is mastered and cut by Rashad Becker at D&M. It is pressed on 140g vinyl with artwork by Bill Kouligas.