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DN221 / DN-RC

Power supplies for vintage microphones

DN221 mono unit - DN221 stereo unit - DN221-R pattern remote controller unit - DN-RC stereo pattern remote controller unit

The most comprehensive mic power supply range available: Precision-aligned, stable voltages, excellent noise specs, no-RF circuitry. Rugged and reliable German handcrafting from 1st-class professional components, for decades of trouble-free operation. Field-proven by hundreds of professionals worldwide, recommended even by microphone manufacturers like Schoeps and Microtech Gefell. A Neumann tech's comment: "this PSU is top-notch !"
Don't settle for less if reliability and stability are a must !

DN 221 info sheet english DN221 info sheet german


Available versions:

DN221 for all AC701-based tube microphones like neumann km, schoeps/telefunken m221, Neumann M269c (also suitable for Neumann CMV3)

DN221-2/2S as above, stereo version

DN-RC stereo remote-controller PSU
For stereo microphones like Neumann SM2, SM23, SM69, SM69fet, AKG C24, C422, C426B and more. Expensive gold-plated rotary switches for trouble-free performance

DN221-E for Neumann/Gefell CMV563, M582 and others with EF or EC tubes

DN221-E2 as above, stereo version

for Neumann U67 (Minituchel socket)

DN221-E67G for Neumann U67 (with U67-specific large Tuchel socket)

DN221-C for Schoeps CM50 and CM60 series

DN221-R with pattern control for AKG C12, Neumann M269, M49, UM57 and more

DN221-VR for Telefunken/Neumann U47/U48/CMV5. The ideal substitute for Neumann NG.

DN221-T transformer-balanced for AKG C60, measuring mics and similar

DN221-T2 as above, stereo version

DN221-M for AKG C-60, measuring mics and similar, quasi-balanced/DC-decoupled

DN221-147 for Neumann M147 / M149 tube



powering converter for Sennheiser/RFT/Gefell/Schoeps with T12, P12 or model-specific powering

Simply insert it into the microphone line, and the mic will power up on any standard 48V phantom source at low noise and high performance. No mains boxes, no batteries, no shaky adaptor cables. Built for professional studio and stage use, highly rugged and weather resistant...

PTK for Sennheiser MKH-T, Neumann U77, KM73, KM74, KM75, KM76, Schoeps CMT

PGK for RFT/Gefell MV692, MV691, MV690, PM750, PM860

PSK for Schoeps CM060 / CM60T

PTK info sheet (pdf) english deutsch

PGK info sheet (pdf) english deutsch

PSK info sheet (pdf) english deutsch


Specific requirements? Anything is feasible ! Just ask...

Non-tube power supplies ? Low-noise phantom, t-/ab or model-specific powering ?
Rare or prototype mics with uncertain powering requirements ? We'll provide the optimal solution !

Compatibility list (t.b.c.)
The following microphones are working flawlessly with DN221 units, or PTK converter respectively:
neumann: cmv3 cmv3a cmv5b km53 km54 km56 km64 km73 km74 km76 km253 km254 km256 m250 m269c u47 u48 u67 u77 m49 m50 mv101 mv201 km73 km74 km76 sm2 sm23c sm69 sm69fet - neumann east/gefell/rft: m582 cmv551 cmv563 um57 cm7049 cm7151 cm6201 mv690 mv691 mv692 pm750 pm860 -funkwerk leipzig cm7156 - schoeps/telefunken/siemens/straesser: cm61 m221a/b/f cm640 cm64 cm65 cm060 cm640t cmt440 cmt34 - sennheiser: mh125 mkh405 mkh406 mkh415 mkh416 mkh435 mkh815 mkh816 and all similar - akg: c60 c61 c12 c12a c24 c28 c29 c30 C422 c424 - sony c37 c800 - telefunken (also US): elam ela m250 m251 - thiele: m1 m4 - pearlman - rode - lomo - brauner Not in the list? Just ask, we'll find a solution !