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Definition of "vf14":
The VF-14 “steel” vacuum tube, manufactured by Telefunken, was used in the original U-47 and U-48 microphones. Because this tube is considered critical to achieving the U-47 sound, and because all the known replacements and recreations do not provide the audio magic that the original does, NOS Telefunken VF14s are rare and expensive.
The best VF14 tubes, selected at the Neumann factory to meet noise and other specifications were stamped with an ‘M’ (for Mikrofon) in white ink on the end of the tube. Non-conforming tubes were returned to the Telefunken factory for use in hi-fi equipment.
Oliver Archut
Only 27,500 VF14 tubes were ever made by the original Telefunken company in Germany, and they stopped production in 1958. Only about 1/3 of the VF14’s passed Neumann’s rigorous standards for being considered “microphone grade.” So, with about 9000 tubes and approximately 5500 U47/U48 mics made, there are virtually no spare tubes left.
Read more about the History of the VF14 tube from Gunter Wagner. See also his notes about counterfeit VF-14 tubes.
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large-diaphragm tube multipattern transformer-coupled condenser m7 ef14 bv8 uf14 replica f7 side-address dual-diaphragm k47 single-backplate mogami ami
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large-diaphragm tube multipattern transformer-coupled condenser m7 ef14 bv8 uf14 replica f7 side-address dual-diaphragm k47 single-backplate mogami ami
Mics tagged: vf14
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FLEA 47Multi-Pattern Tube Condenser Microphone large-diaphragm, tube, multipattern, transformer-coupled, condenser, vf14, m7, ef14, bv8, uf14, replica, f7 |
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Telefunken U47 Multi-Pattern Tube Condenser Microphone side-address, large-diaphragm, dual-diaphragm, tube, multipattern, transformer-coupled, condenser, vf14, k47, m7, single-backplate |
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Wunder Audio CM7 Multi-Pattern Tube Condenser Microphone side-address, tube, transformer-coupled, condenser, vf14, k47, m7, mogami, ef14, bv8, uf14, ami |
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Neumann U 47 Multi-Pattern Tube Condenser Microphone side-address, large-diaphragm, dual-diaphragm, tube, multipattern, transformer-coupled, condenser, vf14, k47, m7, single-backplate |