Pure techno is about timbres and tones. It sidesteps melody, thriving on production and sound processing. Techno-junkies hanker for mechanical repetition that induces four-to-the-floor hypnosis. You either love it or hate it. Berlin’s Tresor label perseveres into this heady chaos with a diverse, unmixed compilation that coincides with their nightclub’s thirteenth anniversary. The sampler gently commences with minimal ditties from Todd Bodine and Stewart Walker, followed by a synth-washy Savvas Ysatis number and loopyness from Pacou. From there, tracks from The Advent, Joey Beltram, James Ruskin, Dave Tarrida, Regis and others pound vigorously, digging deeply into the inner-depths of your skull.