This microphone is the pope of all the bottles, the founder of a generation that then made the history of audio recording especially in major political, cultural and musical events ... just serviced, overhauled and powered by drefahl audio, (1k) ... therefore perfectly functional, with a cardioid capsule it sounds like a god, like a U47 ... the one supplied is a little dark, as it is still original sealed with the Neumann brand, never opened ... therefore this one should also be serviced a little, perhaps just cleaned ... internal preamp board with Hiller valve, less noisy than the one with the Telefunken 084 of the successor CMV3 ... very rare object to find, whoever has it will hold on to it ...