This review takes a close look at the Rode NTK, a tube microphone that offers a clear sound at a reasonable price point. While it's fairly basic with a single polar pattern and no extra features like high-pass filters or pads, it boasts low self-noise and a high maximum SPL.
What's Included and Build Quality
The Rode NTK comes in a sturdy hard-shell case, which is great for storage and transport. Inside, you'll find the microphone itself, a clip with a stand adapter, a long 7-pin XLR cable, the power supply and some documentation.
The microphone has an all-metal body and a metal mesh grill, giving it a solid feel. There are no buttons or switches on the mic itself, just a 7-pin XLR port on the bottom.
The power supply is a bit chunky but feels very robust. It has a power switch, a voltage selector (important to set correctly to avoid hum), a 7-pin XLR input for the mic, and a 3-pin XLR output. All the connections feel secure.
Key Specifications
- Polar Pattern: Cardioid
- Frequency Response: 20Hz - 20kHz
- Sensitivity: -38dB
- Self Noise: 12dBA
- Max SPL: 158dB
- Impedance: 200 Ohms
Performance Tests
Off-Axis Rejection and Coloration
The NTK handles off-axis sounds fairly well, with minimal coloration when rotated up to 180 degrees.
Plosive and Proximity Effect
When tested with plosives, the NTK performed decently. When placed very close to the microphone, the proximity effect is noticeable, adding warmth. As you move further away (3 inches, 1 foot, 4 feet), the proximity effect diminishes, providing a more natural sound.
Background Noise and Room Tests
In a relatively treated room, the NTK sounds good. In an untreated room, it picks up more ambient noise, as expected.
Shock Rejection and Resonance
The microphone does a good job of rejecting vibrations from tapping on the desk or boom arm. Tapping the body of the microphone didn't reveal any significant resonant frequencies.
Overall Thoughts and Recommendation
If you like the bright, airy sound of the Rode NTK, it's a solid choice, especially considering its price for a tube microphone. It offers good build quality, low noise and high SPL handling.
However, if you prefer a slightly darker tone or need more versatility, you might consider the Rode NT2a (for its multiple polar patterns and filters) or the Rode K2 (for a less pronounced upper-frequency boost). Ultimately, if the NTK's sound profile matches your needs, it's a fair value.
