IRPA MKE-20-2 Pair of Cardioid Electret Condenser Microphones — Serviced, 1990, USSR, S/N 01 & 02

For your attention the EXTREMELY RARE Pair of Soviet IRPA MKE-20 Electret condenser microphones. These unidirectional microphones was designed for recording and amplifying music and speech, featuring a cardioid polar pattern and a pressure-gradient acoustic principle. Manufactured in the early 90s in the USSR, the MKE-20 was produced in a tiny, experimental batch, making it exceptionally rare. These two specific microphones have serial numbers 01 and 02, marking them as the very first in this series. It's unclear if any others were ever produced, as no additional information on these microphones could be found. Likely produced by the IRPA (A.S. Popov Institute of Broadcast Reception and Acoustics), these mics are so rare that they will probably never appear on Reverb again. Both microphones have undergone a full servicing to ensure optimal performance. While they are sold as a pair, they are not a stereo set, as they feature slightly different frequency response characteristics, giving each microphone its own unique sound profile. Please note: one microphone has a slightly bent casing (see photos), adding to its character without affecting functionality. WORLDWIDE SHIPPING. Terms of delivery approx. 3-7 weeks. (AirMail with tracking number) I will ship it within 4 days after payments received.