When it comes to dub techno, no-one's flying the flag quite like Steve O'Sullivan these days. His Mosaic label is a bastion for the sound, and on this latest missive he's teamed up with Mike Schommer for some excursions into reverb soaked, filter sweeping hypnotism of the highest order. Before we get on to the originals though, equal dub tech legends Deepchord are at the controls on the A side with the "Negative Space Exploration" version of "Submerged", pinging the track out into a vast, icy landscape with subtle drums and stirring string swells lurking in the mist. The original version kicks off the B side with a cleaner, sharper finish but no less of that Basic Channel-inspired finesse. "Depth Charge Dub" completes the package with a slinky dive into stripped down dubby house for the heads.