Sorry, this product is currently unavailable. If you're looking for something that will be of a similar fit in your studio, please contact us using the methods below.

Neumann M250 #31 (used-B) – No Longer Available

Large diaphragm tube microphone

Product Description

The Holy Grail vintage tube omni microphone, known for its superbly detailed and natural tone, using the AC701K tube. Comes with original case, cable, Neumann N52a PSU, and new Wunder yoke mount.




The AC701K triode tube is the higher-quality version of the AC701. Created for the telephone network in Germany, the 'K' stands for Klingarm, which means 'low ringing noise'. This tube was specifically designed to be less susceptible to tube microphonics.

The M250 is the broadcast version of the classic M50, one of the most widely used microphones for recording classical music, particularly in the 'Decca Tree' format, where three of these omni's were suspended above the orchestra to capture the full detail of the sound stage. With its diaphragm mounted on the face of a perspex sphere, the M50 has unique tonal characteristics that are found in no other mic of its era. There is probably no better omnidirectional mic for recording, and the wealth of great orchestral albums done with this mic attest to its greatness.

Product Specifications

Condition Used / Vintage
Tube or Solid State Tube
Tube Type ac701k
Capsule Type m50
Polar Pattern Omni-Directional
Phantom Required No
Frequency Range n/a

Product Reviews

No one has written a review yet. Be the first!

* Required Fields

Share Your Opinion

The best gear advice always comes from those who use it the most. That's where you come in! Let the pro audio world hear your voice with a review of the Neumann M250 #31 (used-B). Once you submit your review, please check your email and verify your address to have it posted.

How do you rate this product?
I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
Matthew R.
I had two Grammy wins this year - Ray LaMontagne & Carolina Chocolate Drops. Both made with help from Vintage King!
Ryan F.
In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
Martin C.
This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
Phil T.