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If there were ever a microphone that was the epitome of classic, hi-fidelity sound, it would be the Austrian-designed C12. Originally developed by AKG Acoustics in 1953, the C12 is revered for its smooth, airy frequency response. The design of the C12 was unique in its remote capsule polarizing technology. The ability to change the capsule’s polar response variably between cardioid, omnidirectional and figure 8 (and six intermediate patterns between) from the power supply instead of with switches on board the microphone made the C12 the one of most versatile large diaphragm tube microphone of its time. Considered by many to be the finest sounding microphone ever produced, original C12 microphones are still in use in recording studios throughout the world.

Sonic Characteristic

The large diaphragm vacuum tube-based C12 is a fantastic choice for all types of instruments, lending itself especially well to drum overheads, acoustic guitar, and vocals. Its silky smooth top end provides plenty of air without sounding harsh or artificial. Its midrange speaks clearly and articulately, capturing the source with a natural presence. Its low end is tight and focused, perfectly balanced with the rest of the frequency range.

Circuit Design

At the heart of every C12 microphone is our coveted CK12 capsule, handcrafted in-house by experienced technicians with meticulous attention to detail. Years of work went into reverse-engineering this legendary capsule design, with backplates machined to match the originals and diaphragms tuned and glued by hand. The amplifier circuit utilizes a German-made Haufe T14 output transformer built to match the original, driven by a microphone grade 6072a vacuum tube. Our circuit design builds upon the original with the implementation of cathode self-biasing operation, a configuration which is quieter, more consistent over the lifetime of the tube, and requires less power supply calibration than the original fixed-bias configuration.


Every part of the C12 microphone has been reverse engineered and recreated to preserve the impressive point-to-point construction and aesthetic of the original. This elegant and open design cascades beautifully from top to bottom, revealing every detail of what is truly a handmade instrument. Headgrilles, connectors, capsule mounts, plastic decks and more are all compatible with vintage AKG C12s in need of service. Coveted by an extensive list of professional recording engineers, the TELEFUNKEN Elektroakustik C12 historic reissue is an exceptional microphone that will be a treasured addition to your microphone collection for many decades to come.


Each C12 microphone comes complete with M 910 power supply, M 810 25’ Sommer tube microphone cable, Rycote shockmount, FC10 locking flight case and WB10 wooden microphone box.

Technical Specifications

Type: Vacuum Tube Condenser

Polar Pattern: 9-Pattern Variable including Cardioid, Omnidirectional, Figure-8

Frequency Range: 20 Hz – 20 kHz, ±3 dB

Power Source: External Power Supply

Capsule: TELEFUNKEN Elektroakustik CK12 - Edge Terminated Large Diaphragm

Tube: TELEFUNKEN Elektroakustik 6072A

Transformer: Haufe T14/1

Sensitivity: 10 mV/Pa, ±1 dB

THD at 1kHZ at 1Pa (Amplifier): < 0.25%

Output Impedance: 200 Ω

Maximum SPL (for 1% THD): 130 dB

S/N Ratio: 85 dBA

Self Noise (Amplifier): 9 dBA

Dimensions: 250 mm L x 42.5 mm Dia

Weight: 567 g

Included Accessories: Tube Mic Cable, Power Supply, Shock Mount, Wooden Box, Flight Case

Photo Gallery

Video Gallery

Press Releases

Zoux Explores Premier TELEFUNKEN C12 Tube Mic

By Alan | May 13, 2022

Zoux and TELEFUNKEN’s large diaphgram C12 condenser microphone. Photos by Dan Boissy. Los Angeles, CA, May 2022 – LA-based recording artist and engineer Zoux has been putting TELEFUNKEN’s C12 large diaphragm mic through it’s paces for his new band. As a producer he has used the C12 with such dynamic artists as Macy Gray, and…

Jeff Gitelman Recovers Stolen TELEFUNKEN C12 Microphone

By Patrick | April 1, 2016

Thief Called TELEFUNKEN To Purchase Power Supply Los Angeles, CA, April 2016 – Prolific producer/engineer and songwriter Jeff Gitelman was crestfallen when he discovered that his prized TELEFUNKEN C12 microphone was missing from his mic locker. Gitelman had purchased the new C12 reproduction of the classic AKG C12, first developed in 1953. “When we found…

Troy Germano Purchases Telefunken USA ELA M12

By Alan | December 19, 2008

Former Owner of Hit Factory Equips New Germano Studios NYC, December, 2008 – Troy Germano, owner of the recently launched Germano Studios, has purchased the Telefunken | USA Ela M12 large diaphragm tube microphone. The fifth Telefunken USA microphone system in his extensive collection, the M12 is built by hand in the USA to the…

Grammy®-Winning Mixer/Engineer Rafa Sardina Purchases Matched Pair of Telefunken ELA M 12s

By Alan | July 19, 2004

Pictured at AES 2004 are (L-R) Telefunken North America CEO Toni Fishman and multiple Grammy –winner Rafa Sardina.  Photo by David Goggin. San Francisco, AES 2004 – Seven-time Grammy-winner mixer/engineer Rafa Sardina has purchased a matched pair of Telefunken NA’s Ela M12 recreations of the classic microphone manufactured in the 60s and considered one of…