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Warm Audio WA73

Description

The Essentials to Know About the Warm Audio WA73 Class A Mic Preamp



  • Its "British" sound inspired by the 1073 thanks to Carnhill transformers made in England.

  • Up to 80 dB of gain via rotary switch, ideal for dynamic and ribbon microphones.

  • 4-position inductive high-pass filter and "Tone" switch to adjust impedance and shape the timbre.

  • Mic/line/DI inputs, insert, output control, and LED indicator for uncompromising studio or stage integration.


A British Classic, Revisited by Warm Audio


For decades, the 1073 has marked pop/rock productions with its warmth, density, and presence. The WA73 pays tribute to this legendary circuit by reinterpreting it with discrete components and hand-wired assembly. Positioned at the heart of the WA73 range (single or dual channel versions, with or without EQ), this single-channel no-EQ model focuses on the pure preamp sound and modern reliability.


For What Uses and Who?


Designed for demanding sound engineers, producers, and musicians, the WA73 excels on vocals, guitars, drums, pianos, and DI basses. Its significant headroom, harmonic character, and shaping tools make it an asset both in home studios, commercial studios, and on tour.


Features That Make the Difference


Generous Gain and Dynamic Control


The stepped gain selector offers up to 80 dB, complemented by an output level control to drive the Carnhill transformers without saturating your converters. The Class A discrete component design ensures low noise and fast response.


Timbre Shaping Inspired by Consoles


The "Tone" switch modifies the transformer's input impedance to add thickness or clarity depending on the microphone. The switchable inductive high-pass filter (50, 80, 160, 300 Hz) allows brightening the low end while preserving the body of the sources. Polarity inversion and 48 V phantom power complete the arsenal.


Seamless Studio/FOH Integration


XLR mic input, balanced 6.35 mm line input, front-panel DI for instruments, and 6.35 mm asymmetrical Send/Receive insert for chaining compressors or external EQs. An LED level indicator facilitates level alignment, while the "Ground Lift" switch, internal 115/230 V power supply, and 19-inch rack format ensure a clean and reliable setup.


Technical Specifications


Audio



  • Single-channel Class A mic preamp, discrete components, hand-assembled and wired

  • Carnhill transformers made in England

  • Gain up to 80 dB via rotary switch

  • Switches: "Tone" (modifies transformer input impedance), polarity inversion, 48 V phantom power

  • Switchable inductive high-pass filter: 50, 80, 160, 300 Hz

  • Frequency response: 20 Hz - 20 kHz (+/- 0.5 dB)


Connectivity



  • XLR mic input

  • Balanced 6.35 mm (TRS) line input

  • 6.35 mm asymmetrical Send and Receive insert

  • Front-panel instrument (DI) input


Controls and Indicators



  • Output level control

  • LED level indicator

  • "Ground Lift" switch


Power Supply and Format



  • Internal switchable power supply 115 V / 230 V

  • 19-inch rack format

  • Weight: 3.6 kg

Brand reference number: 7248523W13001
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