The RS1 is something completely new and different. It is a wild and untamed microphone you never heard before! The RS1 is a handbuilt variable pattern tube condenser microphone system with adjustable frequency response settings. Working with the RS1 means working in a new way. Forget everything you know about microphones.
The KS3 is a hand built true pressure transducer with an all tube amplifier. It is a 1" condenser microphone system with a warm, three-dimensional, transparent sound. It has perfect impulse and phase response.
The VS2 is a hand built single pattern tube condenser microphone system. It has a good cardioid proximity effect and gives a naturally and warm sound with an unique clarity and precision.