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Warm Audio

Warm Audio WA73-EQ Microphone Preamp & EQ - 1073 Style

★★★★★4.6 (38 reviews)

Single-channel 1073-style preamp and 3-band EQ with 80dB of gain and a fully discrete, transformer-balanced signal path.

$799.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Warm Audio WA73-EQ is a single-channel microphone preamp and equalizer designed to faithfully reproduce the tonal characteristics of the legendary 1073 circuit. At its core is a fully discrete, transformer-balanced signal path that imparts the rich harmonic saturation and bold midrange presence that made the original 1073 a studio standard. With 80dB of available gain, the WA73-EQ can comfortably drive low-output dynamic and ribbon microphones — sources that often struggle with preamps offering less headroom — while also handling line-level signals and direct instrument inputs.

The integrated 3-band EQ is a key differentiator from preamp-only units, allowing engineers to shape the frequency content at the source before committing the signal to a DAW. This can reduce the need for corrective EQ in the mix and helps capture a more polished tone during tracking. The unit's build quality reflects its professional intent, with a sturdy chassis weighing 11.6 pounds and dimensions of 8.66 x 3.15 x 1.18 inches. For studios looking to add classic 1073-style color to their recording chain without the five-figure price tag of a vintage unit, the WA73-EQ offers a compelling and practical alternative.

Key Features

1-channel Mic/Line/Instrument Preamp with 3-band EQ

Specifications

Brand
Warm Audio
Model
WA73-EQ
Type
Microphone/Line/Instrument Preamp with 3-band EQ
Channels
1
Maximum Gain
80dB
EQ
3-band
Signal Path
Fully discrete, transformer-balanced
Dimensions
8.66 x 3.15 x 1.18 inches
Weight
11.6 pounds
Color
Black

Pros & Cons

👍 Pros

  • 80dB of gain handles even low-output ribbon and dynamic microphones without requiring an inline booster.
  • Fully discrete, transformer-balanced signal path delivers the harmonic richness associated with classic 1073 circuits.
  • Built-in 3-band EQ allows tonal shaping at the preamp stage before the signal enters the DAW.
  • Accepts mic, line, and instrument inputs, covering a wide range of recording scenarios in one unit.

👎 Cons

  • Single-channel design means you need two units for stereo recording, increasing cost.
  • At 11.6 pounds it is relatively heavy for a single-channel preamp, which may be a consideration for mobile setups.
  • The 1073-style coloration is by design, but it is not a transparent preamp — not ideal if a clean, uncolored signal is the goal.

Frequently Asked Questions

It accepts microphone, line-level, and instrument-level signals, making it suitable for recording vocals, outboard gear, and instruments like guitar or bass directly.
The EQ section provides three bands of frequency shaping modeled after the classic 1073 circuit topology, allowing you to sculpt highs, mids, and lows directly in the preamp stage before the signal reaches your DAW.
It is a single-channel unit. If you need stereo or multi-channel recording through this style of preamp, you would need to purchase additional units.
Yes. The signal path is fully discrete and transformer-balanced, which contributes to the harmonic character and tonal warmth associated with classic 1073-style preamps.
The WA73-EQ provides up to 80dB of gain, which is sufficient for driving low-output dynamic and ribbon microphones without needing an external booster.

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