drefahlaudio.com
drefahlaudio AC701-FD and VF14-FD
Most Neumann vintage users fear the day on which their last AC701 or VF14 tube comes up with noises. Good spares are no more available or at fancy prices only. We have developed solutions to this growing problem, the AC701-FD and VF14-FD.
The AC701-FD mounts into the mic with minimum, fully reversible changes, while the original signal path remains completely unaltered.
The VF14-FD plugs into the U47/48's tube socket without any changes required at all.
New life for your KMs, U47/48, M49, M50 and even Ela M250 / M251 ! This means: lowest noise, no ringing, at virtually unlimited lifespan. As reported by satisfied users, any sound difference is smaller than between two average mics of the same type in general.
Please note: Both products are available as part of a repair/servicing order only (no sale by retail).
Neumann M49B sound sample (recorded from loudspeaker):
with Telefunken AC701 NOS tube
with drefahlaudio AC701-FD substitute
AC701-FD product info (PDF)
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Your microphone needs a spare part no more available from the original manufacturer? Let us know ! *
Many outdated parts are still found in our stock or will be remanufactured by us or associated suppliers.
Our tube service comprises tube testing, tube supply and, in cases, tube repair. For the much sought-after Telefunken VF14 and AC701 e.g., we are offering thorough testing by means of dedicated testing equipment.
*) only in combination with a repair order. No sale by retail.