Offered here in a silver finish, the Warm Audio WA-47jr 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, and 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. It comes with a vibration-reducing shockmount and a compact hardmount to allow flexibility in placement and positioning.
Custom Capsule
The WA-47jr utilizes a custom reproduction of the vintage K47-style capsule that was used in the classic U47 microphone—designed with the same 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 modernized 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.
Features at a Glance
- Updated transformerless version of the highly coveted classic '47 microphone
- Custom-made Warm Audio K47-style 1.3" capsule (model# WA-47-B-80v)
- Gold-sputtered, dual large diaphragms (6-micron Mylar) with a single backplate
- Fully discrete signal path, Toshiba FETs, Wima film capacitors, and Panasonic electrolytic capacitors
- Cardioid, figure-8, and omnidirectional polar patterns
- 70 Hz high-pass filter
- -10 dB pad
- XLR 3-pin output
- Requires 48V phantom power
- Includes shockmount, hardmount, and pouch
In the Box
Warm Audio WA-47jr Large-Diaphragm FET Condenser Microphone (Silver)
Shockmount
Hardmount
Zippered Storage Pouch
Limited 1-Year Warranty
Specifications
Primary Applications |
Studio Recording |
Form Factor |
Large Diaphragm Mic / Stand/Boom Mount |
Intended Sound Sources |
Vocals, Instrument |
Sound Field |
Mono |
Operating Principle |
Pressure Gradient |
Capsule |
Condenser |
Diaphragm |
1.3" / 34 mm |
Polar Pattern |
Cardioid, Figure-8, Omnidirectional |
Pattern Selection |
Switched (Adjustable on Mic) |
Orientation |
Side Address |
Circuitry |
Solid-State (FET) |
Pad |
-10 dB |
High-Pass Filter |
70 Hz |
Tone Adjustment |
None |
Gain Adjustment |
None |
Indicators |
None |
On-Board Controls |
High-Pass Filter, Pad, Polar Pattern |
Windscreen |
None |
Frequency Range |
20 Hz to 20 kHz |
Maximum SPL |
147 dB SPL (1 kHz, .5% THD, 1-Kilohm Load) 157 dB SPL (1 kHz, .5% THD, 1-Kilohm Load, with Pad) |
Impedance |
100 Ohms |
Load Impedance |
≥ 1000 Ohms |
Sensitivity |
-40 dB |
Dynamic Range |
138 dB A-Weighted
|
Signal-to-Noise Ratio |
85 dB A-Weighted |
Equivalent Noise Level |
9 dB A-Weighted |
Output Connectors (Analog) |
1 x XLR 3-Pin Male (on Mic) |
Headphone Connector |
None |
Bus Power |
None |
Operating Voltage |
48 V (Phantom Power) |
Color |
Silver |
Mounting |
Mic Clip, Shockmount (Included) |
Included Case |
Zipper Pouch |
Included Filters |
None |
Dimensions |
ø: 2 x L: 8.3" / ø: 5.2 x L: 21 cm |
Weight |
1.1 lb / 0.5 kg |
Package Weight |
3.83 lb |
Box Dimensions (LxWxH) |
11.15 x 10 x 6.2" |