The Rode NTK Valve 1" Condenser Microphone is a large-diaphragm condenser microphone, which employs Class-A valve circuitry resulting in a warm sonic character. Sporting a cardioid polar pattern, the NTK is designed for vocal and general instrument recording, while providing the sonic character found in higher-priced tube microphones. The capsule features a mylar dual-diaphragm, sputtered in gold to provide transparent signal reproduction and wide frequency response.

The hand-selected and graded 6922 twin-triode valve comprises the core of the NTK's circuitry, providing an analog "warmth" and presence that meets the standards of the most demanding engineers. The microphone features a custom-built, Mu-metal transformer developed by Jensen Transformers. The end result is quiet, noise-free output at high-gain levels. The NTK includes a separate power supply.