Warm Audio WA73-EQ Single-Channel 1073 Style Microphone Preamplifier and Equalizer

SKU: WA73EQ MFR: WA73-EQ
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Key Features

  • Capture pristine audio with this single-channel microphone preamplifier.
  • Sculpt your sound using the classic 1073-style EQ for rich, warm tones.
  • Enjoy versatile connectivity with XLR and 1/4" inputs for any source.
  • Experience low-noise performance, ideal for studio and recording sessions.
  • Shape your sound with precision using selectable frequency boost/cut options.
  • Achieve vintage warmth with fully discrete circuitry and premium components.
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Special Order?Estimated to Ship: 09/15/2025
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Warm Audio WA73-EQ Specifications

  • Number of Channel

    1

  • Frequency Response

    20Hz - 20kHz +/-.5 dB

  • Low Band Boost/Cut

    35, 60, 110, 220 Hz

  • Mid Band Boost/Cut

    360, 700, 1600, 3200, 4800, 7200 Hz

  • High Band Boost/Cut

    10, 12, 16 kHz

  • Fully discrete

    Yes

  • Phantom power

    48V

  • Polarity switch

    Yes

  • Power

    Internal IEC 115v/230v power inlet

  • LED level indication

    Yes

  • Width

    19" (48.26cm) rackable

  • UPC Code

    713541493162

About Warm Audio WA73-EQ

From the professional recording studios to live performance settings, the WA73-EQ Single-Channel 1073 Style Microphone Preamplifier and Equalizer by Warm Audio is a high-quality, durable, and versatile audio equipment that has been a staple in the music industry for decades. Known for its unique and familiar tone, this '73-style preamp has shaped the sound of pop and rock records, making it a sought-after choice among audio engineers.

The WA73-EQ is part of the esteemed "WA73 Family" by Warm Audio, a collection that pays tribute to the rich British audio history. Each preamp in this family, whether single or dual channel, with or without EQ, is designed to meet the vintage expectations in both design and performance.

After extensive research and development, reverse-engineering, and countless hours of auditioning, the WA73-EQ was born. It's not just a boutique preamp that you'd want on a "Desert Island", but also a reliable workhorse for both studio and live applications. It works harmoniously with all types of microphones - condenser, dynamic, and ribbon, and shines on a variety of sources such as vocals, acoustic/electric guitars, bass, drums, percussion, orchestras, and keyboards. It can even be used as a tone shaping tool to run partial or complete mixes through.

The WA73-EQ boasts 80dB of gain and a fully discrete Carnhill Transformer balanced signal path, making it capable of handling any recording, mixing, or engineering task. It is hand-wired and hand-assembled, just like the classic '73-style preamps, a feature that contributes to the sought-after British tone.

Warm Audio collaborated with Carnhill Transformers of Cambridgeshire, UK, to design faithful reproductions of the most coveted early version transformers. These transformers are known for their fluid and forgiving nature, saturating sweetly when pushed, and delivering mixes that are nothing short of beautiful.

The WA73-EQ also maintains the integrity of the classic British circuits by using tantalum and polystyrene capacitors in the signal path and an output transistor that is smoother in high gain settings than what is typically found in modern '73-style reproductions.

In conclusion, the WA73-EQ Single-Channel 1073 Style Microphone Preamplifier and Equalizer is a testament to Warm Audio's commitment to delivering innovative, professional, and high-quality audio equipment that stands the test of time.

Warm Audio WA73-EQ Features

  • Single Channel, Class A, '73-style British Microphone Preamp with EQ
  • UK made Carnhill Transformers
  • UK made - Blore Edwards EQ dual-concentric switch potentiometers
  • Hand Wired, hand assembled
  • 80dB of gain - resistor stepped gain switch
  • Fully discrete
  • TONE button - Changes input transformer impedance for varying tone
  • Polarity switch
  • 48v phantom power
  • Inductor based 3 band EQ
  • Low Band Boost/Cut - 35, 60, 110, 220 Hz
  • Mid Band Boost/Cut - 360, 700, 1600, 3200, 4800, 7200 Hz
  • High Band Boost/Cut - 10, 12, 16 kHz
  • Additional high band frequency EQ points added (compared to vintage 1073)
  • 4 position inductor based hipass filter - 50, 80, 160, 300 Hz
  • XLR mic inputs (front & back)
  • Line level TRS input
  • TS Send/Receive insert jacks
  • XLR & TRS line level outputs
  • Direct In, instrument input
  • Output control
  • LED level indication
  • Freq response 20Hz - 20kHz +/-.5 dB
  • 19" rackable
  • Internal IEC 115v/230v power inlet

Product Documents

User Manual

Key Features

  • Capture pristine audio with this single-channel microphone preamplifier.
  • Sculpt your sound using the classic 1073-style EQ for rich, warm tones.
  • Enjoy versatile connectivity with XLR and 1/4" inputs for any source.
  • Experience low-noise performance, ideal for studio and recording sessions.
  • Shape your sound with precision using selectable frequency boost/cut options.
  • Achieve vintage warmth with fully discrete circuitry and premium components.