This is a fully original 19a9 with it's original 20B35 PSU and cables, original capsule and diaphragm, extremely rare desk stand, rubber shock mount stand adapter, standard thread adapter and spare NOS 6J1P tube in exceptional near-mint condition.
We listened to this microphone side-by-side with our studio's NOS pair, and it sounds exactly as 19a9 should sound. It is almost impossible to find an original 19a9 with it's original PSU in any condition - and this one almost looks new aside from a couple paint chips on the back.
The 19a9 requires its original 20B35 PSU to sound as intended because half of the mic's electronics, namely its giant proprietary toroidal output transformer and huge paper-in-oil coupling capacitor, are located in the PSU. The 19a9's output transformer and coupling cap are integral to the sound of this mic, and the toroidal output transformer is unobtainable (as an original or with a modern replacement) because of its unusually high inductance.
The diaphragm has some discoloration, a common occurrence in the 19a9 caused by the metal used for the washer. One of our studio's NOS KMD's has more discoloration than this one - there is absolutely no affect on the sound or longevity. The capsule and diaphragm are otherwise in perfect condition, and the mic sounds absolutely gorgeous.
As always, we would be more than happy to record samples of this particular 19a9, and could record it side-by-side with one or two others for you to compare. Just email me at mike@russianrecording.com
