Soyuz do hand made condenser microphones - they aim to represent the darker side of condenser mics - more of the 1970s sound.
Not only do they hand machine the capsules, but they also wind their own transformers.
The quality does come at a price (inevitably)
17 Tube - Flagship mic solid brass £3850
17 Fet - £1920
Bomblet - £1100
13 Series - matched stereo pair £1,029
https://soyuzmicrophones.com/
Developments for Korg's instrument have been slow but promising.