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CardioidRoswell Pro Audio Mini K47 KD

Cardioid Condenser Microphone

The Mini K47 KD is a large-diaphragm condenser designed specifically for high SPL sources such as kick drum and floor toms.

The mic was initially developed as a “Custom Shop” variation of the Mini K47. Standard Mini K47s were modified to lower sensitivity and increase headroom, at the request of customers who wanted to use the Mini K47 on kick drums.

The popularity of this mod led to the development of more intentional circuit design. The KD still uses a balanced, transformerless circuit, but the new design (launched in 2020) alters the circuit topology to reduce output level and distortion while extending the low-frequency response.

As is true of all Roswell microphones, the KD is built with hand-picked, high-grade components, such as precision audio resistors and film-and-foil capacitors. The NOS JFET is selected for low noise, and individually biased for maximum SPL.

The capsule is a true single-backplate K47 type, 34mm OD. Diaphragm material is Dupont Teijin brand Mylar, metallized with gold. Each capsule is tested via acoustic frequency response sweep to ensure that it meets the company’s standards.

The KD provides natural enhancement in the 4-6kHz range, which helps add definition to kick drum strikes. It has a much more natural response than many of the dynamic kick-drum mics, some of which have a midrange boost of 6-12dB. While aggressive EQ can be appropriate for some genres of music, it can sound artificial for others. The KD was designed to provide a more musical, less artificial option, whether placed inside the drum or outside the resonant head.

The Randall May company has developed a compatible internal mount for the Mini K47 KD, enabling use with its Monorail system.

The Mini K47 KD is finished in a satin black, with a matte black grille, and an embossed brass logo badge. It ships with the Cutaway™ shockmount, Roswell branded microfleece mic sock, and a flight case. The 1-year warranty is doubled to 2 years upon registration of the mic.

Permalink: Roswell Pro Audio Mini-K47-KD

The mic was released in 2020.


Pickup Patterns Pads & Filters
Cardioid (2.8 mV/Pa; 20 - 20,000 Hz)
Capsule Dimensions Impedance SPL/Noise
Diaphragm diameter: 27mm
Capsule diameter: 34mm
Diaphragm gauge: 3 microns
112 Ohms (Low)
Weight Length Max Diameter Interface(s)
n/a 150mm (5.91'') 44mm (1.73'')
  • 3-pin XLR male (1)
Power Specifications
  • Requires phantom power
  • Phantom voltage: 48v

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