Having earned his corn in the back office of Rush Hour's Amsterdam HQ, Olf Van Elden is now making his mark as a producer. Previously, he's released fizzing, far-sighted techno and house on Voyage Direct and Tape Records Amsterdam. Here, he delivers his most expansive - and arguably strongest - 12" to date for former employers Rush Hour. There's much to admire, from the pulsing analogue motifs and clanking drum machine percussion of "Cable 54" and semi-ambient gorgeousness of "Poly Evolver #1", to the thumping, industrial-influenced modular throb of "Poly Evolver #2". Arguably best of all, though, are his two hook-ups with Jeroen. Choose between the flitting electronic melodies, snappy beats and dreamy chords of "Prototype", and the drowsy, EBM-goes-Detroit brilliance of "Ama Driver".