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Warm Audio WA412

Warm Audio WA412

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Warm Audio WA412 Front

The Warm Audio WA412 is a four-channel mic preamp based on an American console preamps housed in a 1 rack unit.


The Warm Audio WA412 provides the classic sound of Rock N' Roll with fat-sounding and punchy low end and a smooth and open top end.  It features fully discrete-socketed 6-pin Op-amps and custom wound Altran input and output transformers delivering world-class tone.


Each channel uses fully socketed 6-pin op-amps, which are known for their high-headroom and low-distortion characteristics akin to the console that inspired the WA412. Furthermore, the Op-amps are swappable with other op-amps if desired. Warm Audio has worked with Altran to develop transformers to extend low-frequency response. The transformers use a vintage winding technique, which impart a distinct smooth and open character.


The WA-412 is a workhorse preamp that will perform solidly and reliably for all working engineers who need to get on with the job.


Warm Audio WA412 Four-channel mic preamp overview:



  • 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. Can be user-replaced with most six pin, discrete op-amps for varying flavour & tone.

  • 65db of gain.

  • Inputs - Microphone XLR & Active Instrument 2Meg ohm HI-Z.

  • Outputs - Transformer balanced XLR & TRS.

  • TONE button – Input impedance switches from 600 ohms to 150 ohms (affects the tone of both the mic and HI-Z inputs).

  • -20db pad - pads both mic and instrument DI inputs.

  • +48 volt phantom power.

  • LED metering.

  • Output trim knob for precise level control and tone sculpting.

  • Internal power supply (grounded, three-pin IEC cord).

Short Description Four-channel mic preamp based on an American console preamps housed in a 1 rack unit.
Demo in Store No
Manufacturer Warm Audio
Old Price No
Valve / Solid State Solid State
Channel Count Multi Channel
DI Input Yes
Side Chain Input No
Chassis Rackmount
Phantom Power Yes
High Pass Filter No
Includes Dynamics No
Includes EQ No
Digital I/O No
Computer Connection No

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Inc. VAT: £1,229.00 Ex. VAT: £1,024.17

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