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Warm Audio WA-412 4-Channel Mic Preamp

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Original Price $1,499.00
Current Price $1,399.00

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Description

Warm Audio WA-412

The Warm Audio WA-412 is a four-channel microphone preamp designed to bring the bold, punchy sound of a classic American console into a compact 1U rack format. Built with a fully discrete, transformer-coupled signal path, it delivers the weight, impact, and clarity that engineers rely on when capturing drums, guitars, vocals, and full band sessions.

Each channel is equipped with custom-wound Altran USA transformers and a discrete, socketed op-amp, giving the WA-412 the fast transient response and solid low-end that made vintage console pres a studio staple. Modern additions like per-channel output trim and a switchable tone control make it easy to dial in clean headroom or push the circuit for more attitude.

As an authorized dealer, Pro Audio Reserve ensures you receive a genuine Warm Audio preamp backed by full manufacturer warranty and long-term support.

Warm Audio WA-412 Overview

Warm Audio WA-412 4-channel microphone preamp front panel

Classic Console Tone, Four Channels at a Time

The WA-412 is built for engineers who want authoritative sound right from the source. With four identical channels, it is easy to track multi-mic drum setups, record full rhythm sections, or build a cohesive front end for band sessions without juggling different preamps.

The sound is immediate and confident, with punchy low frequencies and an open top end that helps sources sit naturally in a mix.

Warm Audio WA-412 channel controls and tone switches

Flexible Gain Staging with Tone Control

Each channel features a dedicated output trim, allowing precise gain staging without sacrificing character. The Tone switch changes the input transformer impedance, letting you choose between a thicker, vintage-style response or a more open, neutral sound.

This flexibility makes the WA-412 equally useful for clean tracking or adding subtle color during recording.

Warm Audio WA-412 rear panel XLR and TRS outputs

Built for Professional Studios and Mobile Rigs

With microphone XLR inputs, front-panel instrument DIs, and transformer-balanced XLR and TRS outputs, the WA-412 integrates easily into studio racks and live recording setups. Phantom power, pads, LED metering, and a grounded internal power supply make daily operation straightforward and reliable.

Key Highlights

  • Four-channel microphone preamp inspired by classic American console designs
  • Fully discrete, transformer-coupled through-hole topology
  • Custom-wound Altran USA input and output transformers on every channel
  • Socketed discrete op-amps allow future customization
  • Per-channel output trim and tone switch for flexible gain staging
  • Compact 1U rackmount design with internal power supply

To build out a cohesive front end, explore more options in our microphone preamps collection

Warm Audio WA-412 Specifications

Specification Details
Preamp Type Solid State
Number of Channels 4
Phantom Power Yes
Analog Inputs 4 x XLR (mic), 4 x 1/4" (Hi-Z)
Analog Outputs 4 x XLR, 4 x 1/4"
Rack Spaces 1U
Manufacturer Part Number WA-412

What’s in the Box

Included Items
Warm Audio WA-412 4-channel microphone preamp
IEC power cable
Shipping

Shipping & Returns

  • We deliver all US orders in 6–10 business days
  • Free cancellations
  • Returns accepted within 30 days (unused items)
Why Buy From Us

We get it. You've got a lot of choice when it comes to online retailers.
Here's why we think you should shop with us at ProAudioReserve.

  • Free Shipping USA wide. 
  • 30 Day Easy Returns. Not happy with your product, we'll take it back noquestions asked.
  • Great Service. We pride ourselves on the best service, anywhere.

Description

Warm Audio WA-412

The Warm Audio WA-412 is a four-channel microphone preamp designed to bring the bold, punchy sound of a classic American console into a compact 1U rack format. Built with a fully discrete, transformer-coupled signal path, it delivers the weight, impact, and clarity that engineers rely on when capturing drums, guitars, vocals, and full band sessions.

Each channel is equipped with custom-wound Altran USA transformers and a discrete, socketed op-amp, giving the WA-412 the fast transient response and solid low-end that made vintage console pres a studio staple. Modern additions like per-channel output trim and a switchable tone control make it easy to dial in clean headroom or push the circuit for more attitude.

As an authorized dealer, Pro Audio Reserve ensures you receive a genuine Warm Audio preamp backed by full manufacturer warranty and long-term support.

Warm Audio WA-412 Overview

Warm Audio WA-412 4-channel microphone preamp front panel

Classic Console Tone, Four Channels at a Time

The WA-412 is built for engineers who want authoritative sound right from the source. With four identical channels, it is easy to track multi-mic drum setups, record full rhythm sections, or build a cohesive front end for band sessions without juggling different preamps.

The sound is immediate and confident, with punchy low frequencies and an open top end that helps sources sit naturally in a mix.

Warm Audio WA-412 channel controls and tone switches

Flexible Gain Staging with Tone Control

Each channel features a dedicated output trim, allowing precise gain staging without sacrificing character. The Tone switch changes the input transformer impedance, letting you choose between a thicker, vintage-style response or a more open, neutral sound.

This flexibility makes the WA-412 equally useful for clean tracking or adding subtle color during recording.

Warm Audio WA-412 rear panel XLR and TRS outputs

Built for Professional Studios and Mobile Rigs

With microphone XLR inputs, front-panel instrument DIs, and transformer-balanced XLR and TRS outputs, the WA-412 integrates easily into studio racks and live recording setups. Phantom power, pads, LED metering, and a grounded internal power supply make daily operation straightforward and reliable.

Key Highlights

  • Four-channel microphone preamp inspired by classic American console designs
  • Fully discrete, transformer-coupled through-hole topology
  • Custom-wound Altran USA input and output transformers on every channel
  • Socketed discrete op-amps allow future customization
  • Per-channel output trim and tone switch for flexible gain staging
  • Compact 1U rackmount design with internal power supply

To build out a cohesive front end, explore more options in our microphone preamps collection

Warm Audio WA-412 Specifications

Specification Details
Preamp Type Solid State
Number of Channels 4
Phantom Power Yes
Analog Inputs 4 x XLR (mic), 4 x 1/4" (Hi-Z)
Analog Outputs 4 x XLR, 4 x 1/4"
Rack Spaces 1U
Manufacturer Part Number WA-412

What’s in the Box

Included Items
Warm Audio WA-412 4-channel microphone preamp
IEC power cable
Shipping

Shipping & Returns

  • We deliver all US orders in 6–10 business days
  • Free cancellations
  • Returns accepted within 30 days (unused items)
Why Buy From Us

We get it. You've got a lot of choice when it comes to online retailers.
Here's why we think you should shop with us at ProAudioReserve.

  • Free Shipping USA wide. 
  • 30 Day Easy Returns. Not happy with your product, we'll take it back noquestions asked.
  • Great Service. We pride ourselves on the best service, anywhere.