Roswell Pro Audio Mini K47 - Condenser Microphone

Roswell Pro Audio

Sale price $597.00 Regular price $599.00

Including GST. Free shipping in NZ.

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.

Tech Data

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)

Gear advice

Are you looking for the right gear for your recording set-up and budget?

Choosing the correct item for your home recording set-up is easy for some and confusing for most. Even if you have been working with audio for years, things are constantly changing. The marketing guff and searching the net usually sends you down a rabbit hole of time-wasting.
The core of Indigo Oak Studio is to help people set up and record by taking the mystery and costs out of recording. Right now, that cost you will save is time, patience and disappointment.

Book Now

"Great service from Aaron-already Aaron has helped me make some important early decisions for going forward. It's clear he has an ability to keep things in understandable terms for noobs like me, and I have no doubt he can scale up the advice for all levels. Cheers Aaron and look forward to our next sesh. Pete"
Pete A (Musician)

Get personalised advice from an expert

I've been doing this for 20+ years, and I have been in more home studios than anyone else in New Zealand! I've experience helping people get the best for their unique situation. According to my long list of client reviews, I successfully provide the highest standard of service.  Save yourself time, stress, and the cost of getting the wrong thing.

Plus if you're buying a few things, I'll work out the best bundle price for you.

Book Now

"Over the last 20 years I've worked with a number of different recording studios and engineers, and by far and away Aaron is easily the best of the bunch!
What sets him apart is his absolute dedication to any client or project. He has a knack of asking the right questions and finding out exactly what is most important to you and tailoring his service to this.
Amazing patience, knowledge and expertise - and is quick to learn and understand anything 'outside the box' you may be looking for....
For absolute professionalism I believe there is no better than Indigo Oak Studio - I'd add more stars to this rating if I possibly could!"

S Williams (Professional Musician playing the Wellington scene for 20+ years)

Do you offer personal help setting up and learning to use the gear (and the whole recording and mixing process if required)?

YES - I can be booked in to get you up and tracking. I can teach you as little or as much as you would like to know about home recording and mixing.
Click here to find out more about the Home Recording Support I offer.

Book Now

"I got to ask all the questions I needed to ask regarding the basics of recording audio into my DAW. Everything was explained clearly and with good examples. Great value for my money"
Alejandro C (Musician)

Book now using the appointment scheduler below