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Based on price data from 8 merchants for "Warm Audio WA-412". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Step into the realm of sonic excellence with the Warm Audio WA-412, a masterpiece that encapsulates the quintessence of classic American console preamps. Renowned for its robust punch and pristine open top-end, the WA-412 is a perfect blend of vintage charm and modern reliability. Engineered for the discerning ear, this unit boasts a 1RU design housing four channels of premium-grade audio amplification.
At its core, the WA-412 features fully discrete socketed 6-pin op-amps and custom-wound Altran USA input and output transformers, meticulously chosen to deliver a sound that's both expansive and richly detailed. Whether you're tracking drums, guitars, vocals, or bass, each channel offers a depth and clarity that can only be described as audiophile grade. The unique transformers, developed in collaboration with Altran, extend the low frequency response, ensuring that your recordings capture the full spectrum of sound with an authentic vintage flair.
But it's not just about the sound. The WA-412 is designed with flexibility in mind, featuring an output trim on each channel for precise control over your signal levels. This, coupled with the Tone switch, allows you to toggle between a punchier console tone and a more neutral, open sound, giving you the creative freedom to sculpt your recordings to perfection.
The Warm Audio WA-412 doesn't just reproduce the iconic tones of yesteryear; it brings them into the modern studio environment, combining timeless sound characteristics with contemporary functionality. Whether you're a seasoned engineer or a home studio enthusiast, the WA-412 is engineered to inspire and elevate your recordings.
Key Features:
- Fully discrete socketed 6-pin op-amps for high headroom and low distortion
- Custom-wound Altran USA input and output transformers on each channel
- 65dB of gain with a 20dB pad for mic and instrument inputs
- Tone button for switching input impedance, affecting both mic and DI inputs
- Phantom power (+48 volts) switchable per channel
- LED metering per channel for easy visual monitoring
- Output trim knob per channel for precise level control
- Internal power supply with a grounded, 3-pin IEC power cable
Owner's manual
Warm Audio WA-412 User ManualProduct specs
| 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 |
FAQs
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What is the Warm Audio WA-412 based on?
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The Warm Audio WA-412 is based on the classic API 312 preamp design, known for its punchy and clear sound, commonly used in American recording consoles of the 1970s.
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How many channels does the Warm Audio WA-412 have?
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The Warm Audio WA-412 features four channels, allowing you to simultaneously process multiple microphones or instruments.
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Does the Warm Audio WA-412 provide phantom power?
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Yes, the Warm Audio WA-412 offers phantom power, which is essential for powering condenser microphones.
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What kind of inputs and outputs does the Warm Audio WA-412 have?
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The WA-412 includes 4 XLR mic inputs, 4 quarter-inch Hi-Z inputs, and 4 XLR and quarter-inch outputs, providing versatile connectivity for various studio setups.
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Is the Warm Audio WA-412 suitable for both microphones and instruments?
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Yes, the WA-412 is equipped with both XLR and Hi-Z inputs, making it suitable for use with microphones as well as instruments like guitars and basses.
Videos
Production Expert
Review WA 412 Quad Microphone Preamp
Reviews
PROS
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Delivers a warm, analog sound that enhances drum recordings
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Comparable, if not superior, to high-end units like API 3124 in tone and build
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Offers versatile tonal options with the "tone" switch for different instruments
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High gain makes it ideal for use with dynamic mics without needing extra boosters
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Clean and punchy output, allowing tracks to sit well in mixes
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Provides significant tonal flexibility, from clean to gritty, by adjusting output trims
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Solid build quality, described as "built like a tank"
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Offers great value with professional preamp quality at a lower cost
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Can produce a wide range of tones, beneficial for various musical styles
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Enhances clarity and quality of recordings, especially for drums and guitars
CONS
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Some units may have tighter dials and slightly wonky buttons
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Warm Audio WA-412.
Comparisons
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The WA-412 is compared to the API 512, noted for a more mid-forward sound, unlike the rounder Neve-style preamps.
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Features and functionality
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The WA-412 may lose more low end when driven hard compared to CAPI and API preamps.
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The WA-412 is praised for its punchy and detailed midrange, with tone button engagement enhancing versatility for different applications.
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The WA-412's outputs use balanced line outs, suitable for 1/4” line level inputs on interfaces like the Soundcraft Ui24R.
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Setup and maintenance
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A visual inspection for inconsistencies between channels can help diagnose issues like low output or lack of low end.
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A signal path test using a multimeter can identify components in a faulty channel that don't match a working one.
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Balanced signal loss can lead to a 6dB drop, indicating a potential single-ended issue.
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One user resolved a non-working channel by reseating internal cables and the opamp board, indicating potential loose connections as a common issue.
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Use cases and applications
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The WA-412 excels in clipping snare drums, providing a highly recommended application for this preamp.
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The WA-412 is favored for electric guitar and B3 organ in a three-mic setup, with the tone button engaged for optimal sound.
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For drum recording, connecting three WA-412 units to a multi-channel interface like the Soundcraft Ui24R allows integration with a DAW for 12-channel recording.
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User experience
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Owners report that Warm Audio's customer service is accommodating, allowing users to troubleshoot issues internally without voiding warranties.
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Build quality
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Issues with cable headers not being seated properly were resolved by simply disconnecting and reconnecting, suggesting minor assembly oversights.
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Critic Reviews
Based on 0 Reviews and 0 Ratings
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Based on how musicians on Equipboard use Warm Audio WA-412, it is most commonly used with the following gear.
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