The NTK is a tube microphone designed exclusively for recording professionals who want what only the best can offer. The NTK has a large (1?) capsule gold plated membrane, with twin triode tubes hand graded and selected especially for use in the NTK. The NTK delivers the wide dynamic range, ultra low noise, and the quality and warmth demanded when choosing a tube microphone. NTK, when professional performance counts. Features: Large capsule with gold-plated membrane Ultra low noise Wide dynamic range Class A valve circuitry Hand-selected and graded twin-triode tube Dedicated Power Supply High strength welded and heat-treated steel mesh head Durable satin nickel finish Internal capsule shock mounting High level of RF rejection Specifications: Capsule: Externally polarised 1? pressure-gradient condenser Active Electronics: Unity-gain closed-loop impedance converter; vacuum-tube input with bipolar buffering Pickup Pattern: Cardioid Frequency Response: 20Hz - 20kHz (+/-6dB) Output Impedance: 200 ohms (100 ohms per leg) Sensitivity: -38dB re 1V/Pa (12mV @ 94dB SPL) +/-1dB Equivalent Noise:12dB SPL (A-weighted per IEC268-15) +/-2dB Maximum Output: > +29dBu (@ 1kHz, 5% THD into 1k( load) Dynamic Range: > 147dB (A-weighted, per IEC268-15) Maximum SPL: > 158dB SPL (@ 1kHz, 5% THD into 1k( load) Signal/Noise Ratio: > 82dB (A-weighted, per IEC268-15) External power supply: 100-120V / 200-240V...