JJ Audio

Hand crafted microphones for your recording pleasure
Home      Oktava Mods
Print this pageAdd to Favorite


 MK 219 & 319
 MK 012

Mods for Oktava Microphones
The Oktava microphones are the best buy in inexpensive microphones today. Stock, these mics are excellent recording tools, and they sound far better than the average to mid priced Chinese microphone. These mics have a capsule that is similar in sound to the Neumann and have a warm sound. These mics lend themselves to modification. The stock parts are not the best quality and I have found some stock mics to be wired out of phase. They used several different Fets and the capacitors leave much to be desired.
The mod : MK 219-319

The mod that I do to the MK219-319 is almost the same. The circuit and layout is very close and the same results are acheived.

  • Mod the Grill to a more open and transparent brass wire mesh. In the 219, I cut out the grates across the capsule.
  • Replace and bias the Fet with a Neumann style fet.
  • Two resistors are replaced wit 1Gig resistors
  • Replace tha electrolytic capacitors  with better caps.
  • Replace the Transformer coupling capacitor with a better cap.
  • Retain the switches without adding capacitance **
  • Isolate the capsule from the capsule mount.
  • Replace the wire with Mil. Spec.Teflon/ Silver coated stranded wire.
  • Coat the interior of the body with a rubber compound. (Better than Silicone)
  • Burn in the mic for three days and retest.

** mod inspired by Mark Fouxman
Samar Audio & Microphone Design


The MK012 is a wonderful mic that sounds great out of the box. With some changes the mic sounds amazing.  
  • Change two resistors out to 1 Gig resistors
  • Change the capsule coupling capacitor
  • Change select capacitors to improve frequency response and clairity
  • Change the Fet to a Fet that Neumann uses in the U87 mic
  • Bias the Fet to custom tune and optomise the Fets performance
Dutch the dog
MK 219 319