What is the primary function of the WA73-EQ?

The WA73-EQ serves as both a microphone preamplifier to boost low-level signals and a 3-band equaliser for tonal shaping. It is designed to emulate the sound of classic British recording consoles.

How much gain does the WA73-EQ provide?

The unit provides up to 80 dB of gain. This high gain capability makes it suitable for use with a wide variety of microphones, including those with very low output like ribbon microphones.

What type of transformers are used in this preamp?

The WA73-EQ features custom UK-made Carnhill transformers. These are used in both the input and output stages to provide the specific harmonic character associated with vintage 1073-style preamps.

Is the EQ section bypassable?

The unit features a dedicated EQ section that can be engaged or disengaged. This allows the user to use the device as a clean preamp or as a full channel strip with tone-shaping capabilities.

Can I use external hardware with the WA73-EQ?

Yes, the unit includes a switchable insert. This allows you to connect external processors, such as a compressor, between the preamp and EQ stages of the signal path.

Does the WA73-EQ require phantom power?

The unit itself provides 48V phantom power for condenser microphones. This can be toggled on or off via a switch on the front panel depending on the microphone's requirements.

What are the input and output options?

The WA73-EQ offers multiple connectivity options, typically including XLR and TRS inputs and outputs. It also includes a front-panel DI input for recording instruments like bass or guitar.

How does this model differ from the WA273-EQ?

The WA73-EQ is a single-channel (mono) unit. The WA273-EQ is the dual-channel (stereo) version of the same circuit, providing two identical preamps and EQs in one chassis.

What kind of EQ bands are included?

It features a 3-band console-style EQ. This includes a high-frequency shelf, a mid-frequency bell with selectable points, and a low-frequency shelf, along with a high-pass filter.

Is the circuitry discrete or IC-based?

The WA73-EQ uses a fully discrete signal path. This means it is built using individual transistors and components rather than integrated circuits, which is key to its analogue sound.

Is each unit tested before leaving the manufacturer?

Yes, Warm Audio states that the WA73-EQ is hand-tested and hand-assembled. This process is intended to ensure high reliability and consistent performance across all units.

What is the typical price for the WA73-EQ?

The typical price for the unit is approximately £777. This positions it as a mid-range professional tool compared to entry-level preamps or high-end boutique originals.

Gear article

Warm Audio WA73-EQ Microphone Preamp with EQ

The Warm Audio WA73-EQ is a single-channel microphone preamplifier and equaliser based on classic British console designs. It features 80 dB of gain, discrete Carnhill transformers, and a three-band EQ section designed to provide rich analogue warmth for professional recording and mixing.

See live prices

Overview

The Warm Audio WA73-EQ is a high-fidelity recreation of the iconic '73-style British console preamp. It is engineered for producers, engineers, and musicians who require the characteristic weight and saturation of vintage analogue hardware. The unit is hand-wired and hand-tested to ensure reliability in professional studio environments.

At its core, the WA73-EQ utilises a fully discrete signal path. This design avoids integrated circuits in favour of individual components, allowing for the harmonic complexity associated with classic 1970s recordings.

Key Features and Circuitry

The device is distinguished by its use of premium Carnhill transformers, which are central to achieving the sought-after 'British' sound. Key functional features include:

80 dB of Gain: Sufficient headroom to power low-output microphones, including ribbon and dynamic models.
3-Band EQ: A console-style equaliser that provides precise frequency control and tone-shaping flexibility.
High-Pass Filter: A switchable filter to remove unwanted low-end rumble during tracking.
Inserts: A switchable insert point allows for the integration of external outboard gear, such as compressors or limiters, directly into the signal path.

Fortin Meshuggah Signature Pre-Amp Distortion

Sound Character

The WA73-EQ is noted for its 'rich and full' analogue warmth. By utilizing discrete components and high-quality transformers, the unit imparts a subtle harmonic saturation that adds body to vocals and instruments. The EQ section further enhances this character, allowing users to sculpt the high-end air, mid-range presence, and low-end punch without introducing the harshness often found in digital processing.

Target Audience

This channel strip is suited for a wide range of studio applications. It is an ideal choice for vocalists seeking a polished, radio-ready sound, as well as engineers recording electric guitars, drums, or acoustic instruments. Its versatility makes it equally useful during the mixing stage, where it can be used as an analogue insert to process existing digital tracks.

Comparison to Alternatives

Within the Warm Audio ecosystem, the WA73-EQ serves as the single-channel counterpart to the WA273-EQ, which provides two channels of the same circuitry for stereo applications. When compared to budget alternatives like the Behringer PP400 or inline boosters such as the sE Electronics DM2 TNT or TritonAudio FetHead, the WA73-EQ offers significantly more tonal control and high-voltage headroom. Unlike preamp pedals such as the Boss BP-1W or Peavey Decade, the WA73-EQ is a rack-mounted unit designed specifically for balanced studio signal chains.

Related gear

Frequently asked questions

What is the primary function of the WA73-EQ?: The WA73-EQ serves as both a microphone preamplifier to boost low-level signals and a 3-band equaliser for tonal shaping. It is designed to emulate the sound of classic British recording consoles.
How much gain does the WA73-EQ provide?: The unit provides up to 80 dB of gain. This high gain capability makes it suitable for use with a wide variety of microphones, including those with very low output like ribbon microphones.
What type of transformers are used in this preamp?: The WA73-EQ features custom UK-made Carnhill transformers. These are used in both the input and output stages to provide the specific harmonic character associated with vintage 1073-style preamps.
Is the EQ section bypassable?: The unit features a dedicated EQ section that can be engaged or disengaged. This allows the user to use the device as a clean preamp or as a full channel strip with tone-shaping capabilities.
Can I use external hardware with the WA73-EQ?: Yes, the unit includes a switchable insert. This allows you to connect external processors, such as a compressor, between the preamp and EQ stages of the signal path.
Does the WA73-EQ require phantom power?: The unit itself provides 48V phantom power for condenser microphones. This can be toggled on or off via a switch on the front panel depending on the microphone's requirements.
What are the input and output options?: The WA73-EQ offers multiple connectivity options, typically including XLR and TRS inputs and outputs. It also includes a front-panel DI input for recording instruments like bass or guitar.
How does this model differ from the WA273-EQ?: The WA73-EQ is a single-channel (mono) unit. The WA273-EQ is the dual-channel (stereo) version of the same circuit, providing two identical preamps and EQs in one chassis.
What kind of EQ bands are included?: It features a 3-band console-style EQ. This includes a high-frequency shelf, a mid-frequency bell with selectable points, and a low-frequency shelf, along with a high-pass filter.
Is the circuitry discrete or IC-based?: The WA73-EQ uses a fully discrete signal path. This means it is built using individual transistors and components rather than integrated circuits, which is key to its analogue sound.
Is each unit tested before leaving the manufacturer?: Yes, Warm Audio states that the WA73-EQ is hand-tested and hand-assembled. This process is intended to ensure high reliability and consistent performance across all units.
What is the typical price for the WA73-EQ?: The typical price for the unit is approximately £777. This positions it as a mid-range professional tool compared to entry-level preamps or high-end boutique originals.