O.P.R
    C12 and 251
Tube Microphones
Re-Stocking Special!
​

​

The O.P.R C12 and 251 tube condenser microphones pay homage to two legendary giants of the microphone world, the Telefunken ELA 251 M and the AKG C12. These microphones were developed by AKG in Vienna Austria in the 1950's and 60's, a golden age for sound and microphone development. They have become some of the most revered microphones in the history of recorded sound, fetching tens of thousands of dollars in the collectors' market.

​

 From the simple and elegant physical design, to the minimalist circuit typologies, the O.P.R C12 and 251 strive to deliver some of the magic of the greats of the golden era, at a price point everyone access.

O.P.R 251 and C12 special price is $799.00 Retail price $899.00

​

ALL PRICES ARE EXCLUDING GST FOR AUSTRALIAN CUSTOMERS

​

​

​

​

​

THE BUILD

The circuits used in the in the OPR C12 and 251 are much like the originals. Unlike most mid priced tube condenser mics out there, they have true plate output circuits and contain no so called improvements in the form of multi stage systems, like the CCDA or cathode follower in this mic. The mics have transformer coupled plate out designs just like all of the finest European classics. AKG C12, Telefunken ELA M 251, Neumann U67 and the Neumann U47

The circuits are all hand assembled with through hole components, no cheap robot built surface mount production here. What this means is better quality components can be used. The mics are indefinitely serviceable and most importantly they will not end up in landfill at the first sign of a problem.

​

What we have done with the OPR C12 and 251 mics, is maintain the elegant single stage plate output sound, by utilizing both halves of a duel triode 6072 tube wired in parallel. This has the added benefit of halving the tube output impedance, as well as lowering noise and allowing for cost effective modern production tubes and output transformers to be used. this technique is also used in other expensive modern production" boutique" tube microphones.

​

We then complete the circuit with quality components to deliver a truly classic sound.

This topology more faithfully maintains the behavior and sound character of the originals.

​

​

​

 

  

​

​

  

THE CAPSULE

OPR 12 Capsule is a large diaphragm 34 mm edge terminated capsule.

which Capsule shares a similar sonic footprint to the original Ck12 but with a much simplified internal design, that allows it to be manufactured at a much lower price point. These capsules use gold coated six micron polyester film diaphragms just like classics.

​

​

​

Both the OPR C12 and 251 have nine polar patterns from figure 8 to omni . They come with a PSU, mic pouch, cable, heavy duty shock mount and an aluminum flight case.

​

​

​

​

​

   C12 or 251?

That is the question.

​

Both mics are interchangeable across many applications but the OPR 251 has a fuller more forward sound. It is more present in the upper mid range, making it a stand out lead vocal mic, in particular where the vocal needs to cut through and sit on top of the busiest of mixes. The differences compared to the 12 can mostly be attributed to the multi-layer head basket but there are important circuit differences also.  It's interesting to note, that the ELA M 251 was actually manufactured for Telefunken by AKG with the intention to create a replacement for the Neumann U47, as Neumann had ceased it's OEM supply of U47 to Telefunken at the time.

​

The OPR C12 like the 251 is also a great vocal mic, it is a little more relaxed in the mids and it's wide open head-basket allows for a detailed and airy sound capture while still maintaining a smooth and silky sound. 

The OPR C12 is a stand out on instruments of all kinds.

Think lush drums with shimmery overheads and deep resonating percussive sounds, sweet detailed acoustic guitars and full and Smooth strings, not to mention sibilant free yet airy vocals.

​

​

​

​

    

​

                                                   CK12 MOD

   

​

The OPR Ck12 is historically accurate replica of the AKG-CK12 capsule.

This capsule is where the true legendary sound of the AKG C12 and the Telefunken ELA M 251 is born.  

With its dual asymmetrical back plates and multi chambered design it is one of the most revered and complicated to manufacture capsules in the history of microphones.

​

Think huge proximity effect and a smooth yet airy sound capture, that reaches across a room. 

 

ADD$450.00

​

​

UPGRADE OPTIONS

ULTRALUX UPGRADE

​

251 ULTRALUX UPGRADE

​

The OPR-251 Ultralux 251 clone goes all the way, with its hand wired point to point circuit (hand built here in Australia), mounted on acrylic just like the original. Our historically accurate brass CK12 Replica capsule, is true to the original multi-chambered design. We also use a hand selected vintage 6072a tube.

​

$2200.00 normally $2350.00

​

​

C12 ULTRALUX UPGRADE

​

The OPR-C12 Ultralux, like the 251 Ultralux takes you all the way to 11, with its point to point circuit, mounted on acrylic just like the original. It is hand built here in Australia, as is our historically accurate brass CK12 Replica capsule that is true to the original multi-chambered design.   We also use a hand selected vintage 6072a tube.

​

$2200 normally $2350.00

​

All prices are in Australian dollars

​

The O.P.R 251 and C12 special price is $799.00 Retail price will be $899.00

For the O.P.R C12 ULTRALUX  and 251 the special price is $2200.00 normally $2350.00

shipping is $30.00 Australia wide

      

As usual, patience is a virtue as it will take around 12 weeks or so from when the order is finalized, for the mics to be ready and in your hot little hands.

Payment plans are also available.

​

​

If you would like to take part in this special please email me at

 openplanrecording@hotmail.com
 

Mayfair Kytes - Sleepyhead (official music video)

This beautiful track was recorded using the O.P.R 251 Ultralux on vocals a O.P.R C12 on drum overheads.

​

https://www.facebook.com/mayfairkytes/

The album is available Here 

 

​

OPR ULTRALUX 251 ON VOCALS

Mat and Mark from Cicadastone playing a live and acoustic version of 'Headlights On'. Recorded and filmed live at Coloursound Recording Studio on the 5/7/18. Recorded and filmed by Michael Stifter. Find the studio version of 'Headlights On' on the album 'Chance Collide' by Cicadastone. Also check out www.openplanrecording.com for custom made microphones. www.cicadastone.com - copyright 2018 cicadastone

OPR ULTRALUX C12 ON VOCALS

Pro audio microphones, Ribbon microphone, Mods, repair
"Ribbon microphone OPR mods", "recording microphone c12 ela m251"Title. Double click me.

Β© 2014 Openplanrecording  Wix.com