Warm Audio WA-47jr Large-Diaphragm FET Condenser Microphone (Silver)

Product #63814 | SKU WA-47Jr-SLV | Warm Audio
In stock Ships Monday
Our Price $545.00
In stock Ships Monday
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  • Cardioid, Omnidirectional & Figure-8.
  • K47-Style Capsule Reproduction.
  • Gold-Sputtered, 6-Micron Mylar Diaphragm.
  • Fully Discrete Signal Path.
  • Toshiba FETs.


The Warm Audio WA-47jr Large-Diaphragm FET Condenser Microphone is a large-diaphragm FET condenser microphone designed to provide the tonal characteristics of classic solid-state U47 microphones for vocalists, musicians, and recording engineers in home, project, and commercial recording studios. Thanks to three polar patterns—cardioid, omnidirectional, figure-8—selectable from a switch on the front of the body, its versatility allows it to excel at anything from dry, close-up vocals to ambient room sounds. A -10 dB pad switch raises the maximum SPL from 147 dB to a high of 157 dB, enabling safe use when miking kick drums and cranked guitar and bass amps. Excessive low frequencies from proximity effect are easily reduced via the high-pass filter, which rolls off lows below 70 Hz.

The K47-style capsule reproduction features dual gold-sputtered, 6-micron Mylar diaphragms with a single backplate. The fully discrete signal path includes Toshiba FETs, WIMA film capacitors, and Panasonic electrolytic capacitors to deliver the clean tone associated with transformerless microphones. With a gold-plated XLR 3-pin connector and operability via 48V phantom power, it is compatible with most mixing consoles and mic preamps.

The WA-47jr ships with a storage pouch, hardmount, and a shockmount, which reduces rumble and decouples it from problematic vibrations.

Key Features:

Custom Capsule

The WA-47jr utilises a custom reproduction of the vintage K47-style capsule that was used in the classic U47 microphone—designed with the same hole pattern and frequency response. Warm Audio's version of this capsule (model WA-47-B-80v) is carefully manufactured by an Australian capsule manufacturer whose precision and consistency allows sonic replication of the most important piece of this classic style of microphone.

Low Noise

The WA-47jr's discrete signal path pairs with the true U47-style capsule to obtain a very similar tone to the classic U47 microphone. The low self-noise of only 9 dBA enables pristine capture of quiet sound sources.

Tone-Impacting Components

The WA-47jr incorporates a modernised and simplified circuit design. Toshiba FETs, WIMA film capacitors, and Panasonic electrolytic capacitors contribute to the signature tone of the mic.

Configuration Flexibility

Three polar patterns and a -10 dB pad enable versatility for close and distant positions and loud and quiet sources. The 70 Hz high-pass filter aids in reducing rumble, proximity effect, and excessive low frequencies.


Sound Field Mono
Operating Principle Pressure Gradient
Capsule Condenser
Polar Pattern Cardioid, Figure-8, Omnidirectional
Pattern Selection Switched
Circuitry Tube
Pad -10 dB
High-Pass Filter 70 Hz
Frequency Range 20 Hz to 20 kHz
Maximum SPL 147 dB SPL
Impedance 100 Ohms
Load Impedance 1 Kilohms
Sensitivity 10 mV/Pa
Dynamic Range 138 dB A-Weighted
Signal-to-Noise Ratio 85 dB A-Weighted
Equivalent Noise Level 9 dB A-Weighted
Output Connectors 1 x XLR 3-Pin
Operating Voltage 48 V
Dimensions ø: 2.05 x L: 8.27" / ø: 52 x L: 210 mm
Weight 1.1 lb / 0.5 kg

In The Box

  • Warm Audio WA-47jr Large-Diaphragm FET Condenser Microphone.
  • Shockmount.
  • Hardmount.
  • Zipper Storage Pouch.


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  • Product: Warm Audio WA-47jr Large-Diaphragm FET Condenser Microphone (Silver)
  • Manufacturer: Warm Audio
  • Model: WA-47Jr-SLV
  • SKU: WA-47Jr-SLV
  • RM Product #: 63814

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