Georg Neumann's carbon design greatly improved on the standard mics of the day.
The first commercially manufactured condenser mic, the Neumann Bottle. Later, the CMV3a had a pair of interchangeable capsules.
Sealed NiCad Battery
Neumann's gas-tight, nickel-cadmium accumulator battery led to the creation of the 1.5V Stabilyte cell.
This condenser mic featured the first switchable polar patterns (cardioid and omni) thanks to its dual-diaphragm design.
Stereo Recording Lathe
Developed jointly with Teldec, it combined the AM32a lathe with a newly designed ZS90/45 cutting head.
48V Phantom Power
Although other schemes existed before, Neumann created the standard.
This was the first commercial mic to use 48V phantom power.