} Warm Audio WA-412 4-Channel Mic Preamp — Pro Audio Reserve
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Warm audio 412 front panel view black

Warm Audio WA-412 4-Channel Mic Preamp

Save $100.00
$1,499.00
$1,399.00
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What's Included With Every Purchase
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Personal Rig-Check $147 FREE
We review your mic, OS, and signal chain before your gear ships — and confirm everything works together.
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Studio Blueprint $197 FREE
Your personalized setup guide — exact connections, gain settings, and driver steps for your specific configuration.
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What to add next and in what order — so you never overbuy or back yourself into a dead end.
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Every recommendation we make is personally verified. If anything doesn't perform as confirmed within 90 days, including driver conflicts, gain issues, or compatibility problems, contact us directly. We fix it. No runaround, no forums. A real person responds.
Total included support value:
$441 Included Free With Your Purchase
Description

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 3–5 business days
  • Free cancellations
  • Returns accepted within 30 days (unused items)

Order Confirmation

Once your order is placed, you will receive an order confirmation email. This confirms that we have received your order and have pre-authorized your credit card for the purchase. After confirming availability with our suppliers, we will proceed accordingly:

  • If your item is available and ready to ship within 1–2 business days, we will process the charge and arrange for shipment.

  • If your item is on backorder or unavailable, the pre-authorization will be voided and you will be notified by email.

  • Please note: While most items ship out within 1–2 business days, total delivery time is typically 3–5 business days, depending on your location and carrier handling.

Order Shipment

If your item is in stock and your payment has been processed, your order will typically ship within 1–2 business days. Total delivery time is approximately 3–5 business days from the date of order. Once shipped, you will receive tracking information at the email address provided during checkout within 24 hours of dispatch.

If you have not received tracking information within 3–5 business days of placing your order, please contact us at support@proaudioreserve.com.

The Distributor-Direct Advantage

To ensure you receive the most recent hardware revisions and 100% factory-sealed units, Pro Audio Reserve utilizes a Distributor-Direct fulfillment model. Unlike big-box retailers that may ship "floor models" or gear that has been sitting in general-purpose warehouses, your equipment is pulled directly from the primary manufacturer hub, serialized, and dispatched. This process ensures the highest level of quality control for professional-grade recording equipment.

Shipping Policy

We currently offer free shipping within the United States only. If the checkout process on our website allows you to enter a shipping address and complete your order, your location is eligible to receive delivery.

Changing Shipping Address

If you need to change your shipping address after your order has been processed or shipped, we will do our best to accommodate the request. Please note that address changes may result in delivery delays. Any additional costs incurred due to address changes, including carrier fees or rerouting charges will be the responsibility of the customer. No exceptions.

Shipping Times

All shipping times provided are estimates and should not be considered guarantees. Most orders ship out within 1–2 business days from the time payment is processed. However, total delivery time is typically 3–5 business days, depending on your location, carrier performance, and supplier fulfillment timelines.

We work closely with our vendors to ensure timely deliveries, but please note that supply chain disruptions, high-demand periods, or weather events may occasionally cause delays beyond our control.

  • To avoid misunderstandings: The “shipping time” refers to the total time from order placement to final delivery, not just when the item leaves the warehouse.

  • Cancellations: If you choose to cancel your order because it has not arrived within the estimated delivery window, you may be responsible for applicable shipping charges, restocking fees, warehouse handling costs, and other related fees.

  • Chargebacks: Customers who initiate chargebacks due to shipping delays without contacting us first may be held legally responsible for losses. We strongly encourage open communication so we can resolve any delivery concerns directly and efficiently via our Atlanta-based support team.

Delivery Options

  • Threshold Shipping: Your item will be delivered to your front door, porch, garage, or a covered entryway.

 

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.

Reviews

Customer Reviews

Be the first to write a review
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Description

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 3–5 business days
  • Free cancellations
  • Returns accepted within 30 days (unused items)

Order Confirmation

Once your order is placed, you will receive an order confirmation email. This confirms that we have received your order and have pre-authorized your credit card for the purchase. After confirming availability with our suppliers, we will proceed accordingly:

  • If your item is available and ready to ship within 1–2 business days, we will process the charge and arrange for shipment.

  • If your item is on backorder or unavailable, the pre-authorization will be voided and you will be notified by email.

  • Please note: While most items ship out within 1–2 business days, total delivery time is typically 3–5 business days, depending on your location and carrier handling.

Order Shipment

If your item is in stock and your payment has been processed, your order will typically ship within 1–2 business days. Total delivery time is approximately 3–5 business days from the date of order. Once shipped, you will receive tracking information at the email address provided during checkout within 24 hours of dispatch.

If you have not received tracking information within 3–5 business days of placing your order, please contact us at support@proaudioreserve.com.

The Distributor-Direct Advantage

To ensure you receive the most recent hardware revisions and 100% factory-sealed units, Pro Audio Reserve utilizes a Distributor-Direct fulfillment model. Unlike big-box retailers that may ship "floor models" or gear that has been sitting in general-purpose warehouses, your equipment is pulled directly from the primary manufacturer hub, serialized, and dispatched. This process ensures the highest level of quality control for professional-grade recording equipment.

Shipping Policy

We currently offer free shipping within the United States only. If the checkout process on our website allows you to enter a shipping address and complete your order, your location is eligible to receive delivery.

Changing Shipping Address

If you need to change your shipping address after your order has been processed or shipped, we will do our best to accommodate the request. Please note that address changes may result in delivery delays. Any additional costs incurred due to address changes, including carrier fees or rerouting charges will be the responsibility of the customer. No exceptions.

Shipping Times

All shipping times provided are estimates and should not be considered guarantees. Most orders ship out within 1–2 business days from the time payment is processed. However, total delivery time is typically 3–5 business days, depending on your location, carrier performance, and supplier fulfillment timelines.

We work closely with our vendors to ensure timely deliveries, but please note that supply chain disruptions, high-demand periods, or weather events may occasionally cause delays beyond our control.

  • To avoid misunderstandings: The “shipping time” refers to the total time from order placement to final delivery, not just when the item leaves the warehouse.

  • Cancellations: If you choose to cancel your order because it has not arrived within the estimated delivery window, you may be responsible for applicable shipping charges, restocking fees, warehouse handling costs, and other related fees.

  • Chargebacks: Customers who initiate chargebacks due to shipping delays without contacting us first may be held legally responsible for losses. We strongly encourage open communication so we can resolve any delivery concerns directly and efficiently via our Atlanta-based support team.

Delivery Options

  • Threshold Shipping: Your item will be delivered to your front door, porch, garage, or a covered entryway.

 

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.

Reviews

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)