We have published an article on how to properly clean your microphone here: Microphone cleaning.

What the best Neumann microphone is, depends on the intended use and personal preferences. We strongly recommend that you try out all the mics in question – with the sound source and the room you are dealing with. Based on the results, it is easiest to make a decision.

Furthermore, feel free to visit our “Neumann Home Studio Academy” playlist on YouTube to watch comprehensive tutorials including audio samples and product information to assist you in making a decision.

Due to its extremely low mass, the diaphragm of a condenser microphone can follow the sound waves more accurately than that of a dynamic microphone with a (relatively) heavy moving coil attached. Condenser microphones, therefore, offer superior sound quality and have always been the preferred type for studio use. Many dynamic microphones were designed for stage use and are therefore very robust.
Find more details here: What is a dynamic microphone?
and here: What is a condenser microphone?

We recommend using the Neumann V 402, which is the perfect complement to all Neumann microphones. Discover the V 402 here: V 402 product info.

For demonstration inquiries, please contact your local dealer or your local distributor.

The box with the item no. 074978 is available as a spare part and can be ordered via any dealer.

The U 47's VF14 tube has been out of production for decades. Therefore, a reissue of this microphone is very challenging.