Basshunter

In the famous "DotA" music video, Basshunter (along with other people) can be seen wearing what originally was the Icemat Siberia Headset. It first appears 0:11 into the video.

Link to the original product: https://www.amazon.com/Icemat-Audio-10060-Siberia-Headset/dp/B000ANGTWK/ref=sr_1_1?ie=UTF8&s=electronics&qid=1213992175&sr=1-1

Since then, Icemat and SteelSeries merged into one brand, as stated in Icemat's Wikipedia page: "Icemat is now known as SteelSeries, and Icemat's website now redirects there. In 2007, SteelSeries decided to merge both brands."

Also, in the "In popular culture" section of the same page, it is stated that: "The Icemat Siberia headphones are featured in the Basshunter music video "Vi sitter i Ventrilo och spelar DotA"."

Nowadays, the SteelSeries Siberia V2 and Siberia 200 are updated and more accessible versions of the original headset that Basshunter used in this music video.

At Durham Pride 2016, Basshunter is pictured using Pioneer HDJ-2000 Headphones, as shown in a photo from Chroniclelive.

Razer Carcharias are visible in this photo.