Large-diaphragm condenser microphones with warm tones are produced by the Class-A valve circuitry used in the Rode NTK Valve Condenser Microphone. The RODE NTK, which has a cardioid polar pattern, is intended for recording vocals and other instruments and offers the same sonic character as more expensive tube microphones. The capsule has a wide frequency response and transparent signal reproduction thanks to its mylar dual-diaphragm that is sputtered in gold.

The heart of the NTK’s circuitry is the hand-selected and graded 6922 twin-triode valve, which offers analog “warmth” and presence that satisfy even the pickiest engineers. The microphone uses a specially designed Mu-metal transformer that Jensen Transformers created. At high gain levels, the output is noise-free and quiet in the end. The NTK comes with a different power source.

The 6922 twin-triode valve is the central component of the circuitry of the Rode NTK. As a result, the sound has a warm quality akin to more expensive tube microphones.

The custom-designed, Jensen Mu-metal transformer provides a low-noise, high-gain signal path on output.

The NTK Valve comes with a separate power supply.