How a Neumann U87 microphone is made Posted on Friday, November 15th, 2013 at 8:58 am. PT Written by Jim Dalrymple Fascinating. Eric Dannewitz I’m always interested in the “rumor” that one of these companies supposedly has a horde of vacuum tubes that somehow aren’t reproducible now. Is it AKG? I don’t remember. But that somehow Tubes from the 40s/50s are somehow not replicable now and there is a horde of them somewhere…. GadgetGav Pretty cool. Slightly cheesy voice over, but interesting to see how they’re made. I love the aesthetics of that kind of mic, and even the nice wooden box it comes in. I’d love to have one, even though I don’t need one – right up to the point where he said it’s worth several thousand dollars! GadgetGav Yeah, over $3,000. You need to pay for hand built quality like this.