IRPA MK14
Stereo tube multipattern large diaphragm condenser - 1970, N25
$8,500
Price includes free, fully insured shipping within the contiguous United States.
This is an exceptionally rare and fully functional 1970 IRPA MK14, one of the only known working examples in existence in exceptional original cosmetic and functional condition. It comes directly from Russian Recording’s working mic locker, where it has been used on countless records and meticulously maintained for peak studio performance.
In stock
IRPA MK14 (1970)
Stereo multi-pattern large-diaphragm tube condenser microphone by the Popov Institute
The IRPA MK14 is the Soviet version of the Neumann SM69 stereo tube microphone. Built in 1970, it is a stereo multi-pattern large-diaphragm tube condenser microphone, with only fifty units ever produced by the Popov Institute (IRPA) in Leningrad. It serves as the stereo counterpart to the IRPA/Oktava MK13, one of our all-time favorite tube microphones.
Each channel uses the same double-sided M7-style capsule, 6S31B subminiature tube, and amplifier circuit with its own output transformer. The bottom capsule is fixed, while the top capsule can rotate a full 360 degrees via a dial at the top of the body. Each capsule’s polar pattern can be independently switched between cardioid, omni, or figure-8 using the rotary 3-way controls on the BP-43 PSU. This design allows for an impressive range of stereo configurations, including M/S, X/Y, and variable-pattern mono applications.
The MK14 includes its original PSU, original cables, original capsules in perfect working condition, the original microphone case, and an aftermarket shock mount that fits the mic perfectly. Over each capsule are removable plastic resonators that were part of the original design, intended to introduce a gentle high-frequency rise for distance recording. When removed, the response flattens, closely resembling that of the MK13.
This is an absolutely brilliant-sounding microphone with a low noise floor and exceptional headroom, making it ideal for stereo rooms, drum overheads, vocals, guitars, acoustic instruments, horns, piano, and ensemble recording.
This example is one of the most difficult microphones for us to let go of. It is truly impossible to find another, especially in this incredible condition. After years of assuming the MK14 was little more than a studio legend, we finally confirmed its existence when engineer Larry Devivo unearthed one at his studio, which he eventually sold to us after five years of persistence.
Included:
• IRPA MK14 Microphone (1970)
• Original vintage capsule with original diaphragms
• Original BP-43 Power Supply Unit
• Original cables
• Original microphone case
• Aftermarket shock mount
| Year | 1971 |
|---|---|
| Model | MK14 |
| Manufacturer | IRPA |
| Country of Origin | USSR (Soviet Union) |
| Microphone Type | Valve (6S31B x2) |
| Microphone Transducer Type | Double-Sided Large Diaphragm |
| Power Source | External |
| PSU Model | BP-43 (220V) |
| Channels | Stereo |
| Amplifier Type | Tube |
| Polar Pattern | Multipattern |
| Power Requirement | 220V, External PSU |
| Tube | 6S31B |
| Capsule | Double-Sided Center-Terminated LDC |
