This preamp matches my MK012 preamps very closely and is really great for using for video where you want as small a microphone as possible in shot. The sound quality is excellent, and this is a very quiet mic, with low system noise. We use these for classical recordings and they are great on most instruments, especially violin, woodwind etc.
In testing this active cable/preamp with my other capsules, I've discovered that these pramps are out of phase, with relation to all my other microphones - Sennheiser, AKG, and even some other older silver Oktava MK012 bodies.
This is fine as all my equipment can swap the phase, but it took a bit of figuring out!
This microphone is pretty fragile - I was hanging it and the weight of the capsule was enough to pull the active cable from the restraint. Fully repaired under warranty, but handle carefully!