Telefunken TELEFUNKEN AC701 MICROPHONE TUBE RED DOT FOR NEUMANN BRAND NEW IN BOX NOS AC701K

TELEFUNKEN AC701 MICROPHONE TUBE RED DOT FOR NEUMANN BRAND NEW IN BOX NOS AC701K

There are FOUR(4) available for sale!! Price for ONE(1) item/tube

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Brand New, New Old Stock, Original Telefunken microphone tube for Neumann microphones
Have the red dot that means are the AC701K series tubes according to Tube debot
(See last two photos for that, courtesy of Tube Debot)

Disclaimer, please read below
Tubes for sale here are BRAND NEW, NEVER USED, and NEVER tested. They bought from the Factory many years ago and kept in a controlled environment until today.
The sale is for serious buyers that have the knowledge and understand what they buying.
Please NO "tube testers" buyers.
There will be a 30% restocking fee in any return of a working tube, that's just you didn't like or didn't "match" to your application/system



From Tube Debot site for red dot and date codes of Telefunken AC701
Concerned that these are not AC701K versions? Don’t be - since 1965 Telefunken only made frame grid AC701 (same as the "K" version) so there was no need to specially mark them since they were all "K" versions by that time. Also, these tubes have the red indicator mark on them. Telefunken also sold RFT made AC701 under the Telefunken name and those can be rather noisy and more microphonic than the Telefunken ULM made AC701. RFT made AC701 had a white dot versus a red indicator dot applied only by Telefunken ULM.

The date code shows these were made by Telefunken ULM post 1965. In the date code, if you have U for Ulm and then two letters sometimes with two numbers it is made before 1965. If you have a U and seven numbers then it was made by Telefunken ULM after 1965. All of ours have the same date code of "U4109203".

Finally, the last two digits in the date code represent the design revision number, with 03 being the final version for the AC701. All tubes with the 03 revision level match the AC701 ’K’ specs.

By offering or by purchasing the item you agree on the terms below


We most sell used items and we are responsible to deliver those item to you as described and with Dead On Arrival Guarantee ONLY
Also adding shipping insurance is Buyers Responsibility
Most Items are used (unless otherwise noted at the description) and guaranteed to work and it has a 14day return period policy, with exception of items sold "As Is"

We try out best to describe the items in details, but please ask any possible question about it before purchase or offer. In case of malfunction or any other problem we try hard to solve the issue. In case you need to return the item shipping costs are paid by the Buyer.

Shipping cost is actual and we work with Postal Service and Economy Ground Courier Service (4-7 days in EU, up to 15 days worldwide). We dispatch the items within 24-48 hours after payment received.

We pack the items with great care and we usually use the Original Manufacturer Package, if available. If you need a faster service please ask for availability and cost

Please ASK for shipping insurance for your package. Shipping Cost is not always include insurance unless otherwise is noted. Buyers are responsible to add insurance

Buyers are also responsible also to pay any custom's fees and duties under the laws of their country
Please ask any question you may have before purchase/offer
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