They both are djing and also live producing their unique deep and atmospheric sounds.

The "Intro" magazine described their sound as follows: "Das Kölner Duo IASI montiert auf seiner Debut-EP sehr schlüssig zeitgemäße Versatzstücke der britischen Bass-Musik zu atmosphärischen Stil-Hybriden. Die Gleichung aus stimmungsvollen R'n'B-Vocals, verschachtelten Polyrhythmen und düsteren Synthesizer-Flächen mag bekannt sein, übt hier aber seinen ganz eigenen Reiz aus."

Acid-S and Roughnic met in late 90ies through producing and DJ-ing. They organized undergroundparties and developed their producing skills.

Acid-S worked in studios like Akropolis (EMI, BMG), X.1 (WDR, Kraftwerk) and Sinsport (Groove-Attack, Interworld) as producer and engineer. Roughnic is a member of the Riddim Box Crew and played bookings from Poland to New York, represented IASI on his supportgigs for SBTRKT, Zed Bias, Benga, Chase & Status, Example and Skrillex.

The science of pattern, drums and futuresounds are their common sense.
 In 2012 IASI released their first EP “Vision” on the berlin-based label SUPERB recordings. The second EP "Verify" is coming soon.