Xplayn - Icemat Siberia (later SteelSeries) was the first over-ear (circumaural) gaming headset. It was released in 2004 and was an instant hit in the Counter-Strike community. SteelSeries Ninjas in Pyjamas Natus
Amazon.com: SteelSeries Siberia v2 Full-Size Gaming Headset - (Black) : Video Games