AEA’s KU4 is one of the most useful and unique ribbon microphones in the world. Its supercardioid polar pattern rejects bleed from other instruments and reflections in the room while retaining matchless top-end clarity. As the brightest mic in the AEA line, it retains the full spectrum sonic range that has made ribbon mics a staple in most of the world’s great recording studios.
The KU4’s minimal proximity effect and accented mid-range make it an exceptional vocal mic that captures the presence and detail of a performance. Its near-field nature also lends to the close range recording of kick drums, strings, and woodwinds, providing a welcome brightness and balance in the mix.
Specifications
- Operating Principle: Pressure gradient microphone
- Directional Pattern: Supercardioid
- Frequency Range: Below 30 Hz to 20 kHz
- Maximum SPL: 140+ dB SPL (1% third harmonic > 1 kHz)
- Output Sensitivity: 2.8 mV/Pa (-51 dBV) into unloaded circuit
- Output Impedance: 300 Ohms nominal
- Recommended Load Impedance: 1.2 kOhms or greater
- Polarity: Pin 2 high for positive pressure at the front of the microphone
- Connector: XLR-3M wired to a 1.5 meter captive cable
Off Axis Response:
- Vertical: Level changes with angle, reduced HF response above and below 0° / 180° axis
Transducer element:
- Ribbon Thickness: 1.8 microns ( .0000018 meter ) of pure aluminum
- Ribbon Width: 0.082” (2.1 mm)
- Ribbon Length: 1.25” (28.6 mm)
Accessories:
- Included: Custom storage/shipping case, stand adapter, manual and attached 1.5 meter microphone cable
- Limited Warranty: One year parts and labor, shipping not included. Three year extended warranty if the product is registered.
- Weight with Cable: 4 lb 11 oz (2.15 kg)
- Weight with case: 7 pounds (3.2 kg)
- Height: 12.65” (32.4 cm)
- Width: 4.62” (11.7 cm)
- Depth: 3.75” (9.5 cm)