A mic developed by a mic enthusiast
"K47" refers to the capsule design. Our K47 capsule is modelled after the one in the most famous microphone of all time. It provides a complete, balanced tone without any harshness or hype in the upper frequencies. It will record less sibilance, and fewer mouth sounds on your next vocal track. It will add weight, body, and tone to high strings and electric guitars. It will reduce the jangle in strummed acoustic tracks.
- The original compact K47 condenser microphone
- Designed, assembled, and tested in California
- Vintage tone from true 34mm large-diaphragm K47 capsule
- Handpicked NOS audiophile components
The Mini K47 captures the tone of a vintage microphone with modern performance specifications.
Like all Roswell microphones, the Mini K47 is designed, assembled, and tested in California.
We created a clean, transparent circuit design. It lets the sound of the capsule pass through without alteration. Self-noise and distortion performance are on par with microphones costing significantly more. The circuit incorporates the best tricks we've learned from modifying and upgrading other companies products.
Every Roswell microphone is subjected to a 24-hr "burn-in" on our proprietary conditioning fixture, then tested extensively before shipping: polarity, noise, frequency response, sensitivity, and more. We perform an acoustic sweep test and listen to every microphone before leaving our facility.
The Mini K47 has a durable, heat-treated finish. Each mic ships with our exclusive Cutaway™ shock mount, Roswell branded microfleece mic sock and a flight case.
- True single-backplate 34mm K47 style capsule
- 3-micron diaphragm
- Ultra-clean transformerless circuit
- Imported, audiophile-grade polypropylene signal capacitors
- Heavy, solid steel body with durable powder-coated finish
- Exclusive Cutaway™ elastic shock mount
- Natural, unhyped frequency response
- Enhanced articulation
- Solid, high-quality construction
- High sensitivity
- Low self-noise and very low distortion
- Modern performance with vintage tone
The most unique thing about the Mini K47 is its capsule: a true 34mm K47 type capsule modelled after the capsule in the most famous microphone of all time. We selected this capsule because it delivers a sound that is impossible to achieve with any other capsule design: beautiful midrange detail with a neutral, rather than a hyped, top end.
Most condenser microphones priced under $800 use the 2SK170 JFET, a low-cost, general-purpose amplifier that can sound good when configured properly. But it is usually used in circuits with very high input capacitance (Ciss, 30pF) acts like a hardwired pad: it reduces the mic's sensitivity, effectively raising the mic's noise floor. We prefer a JFET with a much lower input capacitance. We bias each one individually within the microphone's circuit to ensure the highest possible gain without distortion.
The input coupling cap is the first component most aftermarket "modders" would change because so many condenser mics use a low-grade ceramic or generic polyester box film type in this critical position. For the Mini K47, we use a polystyrene part. Styrene capacitors are generally considered the most neutrally voiced, cleanest sounding capacitors.
The main signal capacitors in this circuit are polypropylene film types imported from Germany.
This combination of components delivers a sonic profile that is much more musical and balanced than anything in its price category.
Model: Mini K47
Acoustic Principle: Pressure gradient transducer
Polar Pattern: Cardioid
Capsule: 34mm O.D. True Condenser, K47 style, single backplate
Diaphragm: 3 microns imported Mylar, centre terminated
Frequency Range: 20 - 20,000 Hz
Sensitivity: 14 mV/Pa for Mini K47; 4mV/Pa for KD edition
Impedance: 114 Ohms
Signal-to-noise: 81 dBA
Equivalent noise: 13 dBA
Supply voltage: 48±4 VDC
Output: Electronically balanced (transformerless)
Physical dimensions: 150 × 44mm; 325g (mic only)
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