Sennheiser - Evolution 900 Series US debut Details 14 March 2016 Sennheiser USA introduced the Evolution e900 Series (left) of wired stage mics to the US. The e900 Series includes two professional vocal mics, the e935 and the e945, plus a wide range of new backline instrument mics. Previous article: Robe Show Lighting Prev Next article: Inter-M - audio matrix router for installation Next