Last year, Extrawelt delivered their first album for five years, the wonderfully expansive and on-point Fear of an Extra Planet. Less than 12 months on, they're back with another suitably epic full-length outing, "Unknown". Across three DJ-friendly slabs of wax, the German duo eschews the willful electronic eclecticism that's marked out their recent career in favour of 12 tracks that mine the world of electro for inspiration. While there are subtle nuances and incremental shifts throughout - a little more acid here, a nod to early '90s IDM there, and regular tempo changes throughout - the majority of the album is as spacey, weighty and punchy as you'd expect. It's almost as if Extrawelt has spent the last year exclusively listening to Drexciya records. Superb stuff all told.