In 1990, the German label Celtic Circle Productions offered to become the magazine’s publisher. The magazine also took on the added feature of moving to a glossy format with an attached CD compilation. After weeks of negotiations, Side-Line N°17 was released with a circulation of 7,000 copies. Side-Line was immediately recognised as the leading English-written magazine on the underground genre and received support from the record companies and media throughout the scene. After 6 issues, Claus Müller, chief editor of Germany's popular music magazine Orkus, approached the magazine to start collaborating; however, it was short-lived. By 2000, Side-Line had over 25,000 members.
Today, Side-Line's circulation is 6,000 copies, spread throughout Europe and America. Metropolis Records, Isotank, and Hot Topic distribute the magazine in America, plus an array of various record shops and mail order companies. In Europe, the distribution network is also progressively being intensified with new sale points in the UK, Italy, GAS, Australia, Baltic countries, France, Greece, Spain, Scandinavia, Benelux, etc. In addition, members of the magazine launched their own record company project Alfa Matrix in mid-2001, which releases electronic artists such as Front 242, Ayria, and Unter Null.
On January 10th, 2008, the magazine announced on its website that Dolimont had suffered a viral cardiac attack in December 2007 and was stopping publishing the magazine with immediate effect.