«  A disappointed not to buy »

I worked several years with this system SKM5000 head with Neumann K105S + EM3031 it is well on professional equipment of very good quality, however, few people outside of its pros able to properly adjust the microphone under penalty of a clings so constantly to user frustration over the rooms used by musical groups are far from irreproachable acoustic level that does not help and finally when the frequency plans change (December 2011) and the microphone functioning or very poorly depending on the location Sennheiser turned a deaf ear does not offer any commercial solution even respond to registered letters. Again when it comes to paying everyone responds to this area any more shadow person. Good material very sharp and difficult to use by everyone everywhere. In my case never a Sennheiser in the rest of my musical life.