NEW: PGK powering converter for RFT / Gefell Condensers

Power your Gefell MV690, MV691, MV692 (...) reliably from any 48V phantom input. No modding, bulky power supplies or shaky adaptor cables any more ! Road-proof, overvolt protected, small, safe & easy...

PGK spec sheet english german


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 regulated voltages, excellent noise specs and zero RF interference. Rugged and reliable German handcrafting from first-class components, for decades of trouble-free operation. Field-proven by hundreds of professionals worldwide, and recommended even by microphone manufacturers such as Schoeps or Microtech Gefell. Don't settle for less if reliability and longevity are a must !

DN 221 series product info, english DN221 series product info, 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 as above, for stereo pairs

DN221-2S two fully independent power supplies in one box. Even if one microphone fails, the second will remain fully operative. Optimal reliability and crosstalk figures

DN-RC stereo remote-controller PSU
For tube and FET stereo microphones like Neumann SM2, SM23, SM69, SM69fet, AKG C24, C422, C426B and more. Longlife precision rotary switches for reproducible pattern setting

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

DN221-E2 as above, for stereo pairs.

for Neumann U67 (Minituchel socket)

DN221-E67G for Neumann U67 (with large Tuchel connector for original U67 cable)

DN221-C for Schoeps CM50 and CM60 series

DN221-R single-channel unit 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 units..

DN221-T transformer-balanced, e.g. for AKG C60 and measuring mics used for recording. Stereo unit also available

DN221-M as above, transformerless, low distortion at unrestricted frequency response

DN221-147 for Neumann M147 / M149 tube


PTK powering adaptor for T12 microphones

Just insert it in the mic line and use your 12V t-powered mics with any standard 48V phantom input. For Sennheiser MKHs, Neumann U77, KM73, KM74, KM76 or Schoeps CMTs. No need for bulky mains supplies or shaky battery boxes any more, at lowest noise and unrestricted performance.

PTK spec sheet english german

N-TAINER  mono rack for V72-type vintage audio modules *


Single-unit rack for V72-style units by Neumann, TAB, Telefunken, Maihak etc., as well as power supplies of same size.

The ideal solution to operate those units individually, at full electrical safety and free of cabling hassle. Options include phantom powering, custom connectors etc. etc. product info (PDF)

*) Module must be sent for proper installation and testing.

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
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 !