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Warm Audio WA-412 4-Channel Discrete Microphone Preamp

The Warm Audio WA-412 provides 4 channels of classic American console preamps in a sleek 1RU design.


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Discounted Price $1,199.00
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Discounted Price $1,199.00
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This style of preamp is often referred to as "the sound of Rock n' Roll" for its BIG punchy low end and smooth open top end. The price/performance ratio of the WA-412 is almost unfathomable to the experienced studio engineer who has possibly paid much more for preamps of this style during their career.

Featuring fully discrete socketed 6-pin opamps and custom wound Altran USA input and output transformers, the WA-412 leaves nothing to be desired. If you are looking for multiple channels of world class tone in an affordable package, the Warm Audio WA-412 4-Channel Discrete Microphone Preamp is the right choice for you.

More Features
The WA-412 has all of the features one would expect from this style of preamp... and more. Output Trim has been added to every channel for precise control and creative gain structuring. We also added a Tone switch (transformer input impedance) to each channel, which allows you to choose the warm and punchy classic console tone, or a more open & neutral sound.

Better Components
Each channel utilizes a fully discrete socketed 6-pin opamp that can be swapped with other opamps. Discrete opamp circuitry is known for its high headroom and low distortion characteristics and has much to do with the coveted sound of these classic console preamps.  

Warm Audio is proud to be using input and output transformers that are made in the USA by high-end transformer manufacturer, Altran. They  worked closely with Altran to create unique transformers that extend the low frequency response of the design. The transformers also use a vintage winding technique that produces a very distinct smooth & open character.

Carefully choosing the WA-412 components has resulted in an amazing four channel ‘workhorse’ preamp/DI that performs at the highest levels, while still adding a touch of vintage console magic to your signal.

  • 4 Channel Microphone Preamplifier + Instrument DI
  • Fully discrete, transformer coupled, through-hole component topology
  • Altran USA custom wound, premium input and output transformers
  • X520 discrete op-amp in every channel, socketed for convenience.
  • 65db of gain
  • +48 volt phantom power
  • Internal power supply

Get your Warm Audio WA-412 4-Channel Discrete Microphone Preamp today at the guaranteed lowest price from Sam Ash Direct with our 45-day return and 60-day price protection policy.

Things You Will Get:

  • WA-412 4-Channel Discrete Microphone Preamp
  • Power Cable
  • Owner's Manual

Simply Killer


The WA-412 is all i'll ever need on guitars. The detail in the high mids is simply killer - and it doesn't wipe out the bank balance. You can't go wrong.

Scott Atkins



WA-412 4-Channel Discrete Microphone Preamp

5.0 1


Metering LED metering
Inputs Microphone XLR & Active Instrument 2Meg ohm HI-Z.
Type Microphone Preamplifier + Instrument DI
Power Supply Type Internal power supply (grounded, 3 pin IEC cord)
Special Features Input impedance switches from 600 ohms to 150 ohms (affects the tone of both the mic and HI-Z inputs)

X520 discrete op-amp in every channel, socketed for convenience. Can be user-replaced with most 6 pin, discrete op-amps for varying flavor & tone
Model WA-412
Pad -20dB
Outputs Transformer balanced XLR & TRS
Phantom Power +48 volt
Other Features Altran USA custom wound, premium input and output transformers
Number of Channels 4
Information not available

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