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Warm Audio WA12 MkII

Warm Audio WA12 MkII

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Warm Audio WA12 Front

The Warm Audio WA12 MkII is a single-channel mic preamp using an all discrete signal path with high-voltage and dual transformer circuit for high headroom, low noise operation and stunning sonic performance inspired by the venerable API 312.


The Warm Audio WA12 MkII is designed around the X731 discrete op-amp, a reproduction of the Melcor 1731 which was the predecessor to the modern 2520-style op-amps. The X731 offers a vibrant tone with life-like qualities and can be pushed into subtle and musical saturation at high levels. Users looking to improve their tone can replace the X731 by any 2520-style op-amps.


The WA12 MkII also uses Cinemag transformers on the input and output stages to ensure stunning performance with huge headroom.


Warm Audio WA12 MkII Main Features:



  • Utilises premium grade input and output USA CineMag transformers.

  • 71db of Gain, fully discrete signal path.

  • Utilises a discrete 6-pin socketed 1731 style opamp.  Can be replaced with other 6-pin "2520 foot-print" opamps for varying tone/flavour.

  • TONE button – Switches the input impedance from 600 ohms to 150 ohms.  Changes the tone of both the mic and HI-Z inputs.

  • 2 Meg Ohm True HI-Z input on front panel. Sends instrument signal through entire circuit including both Cinemag Transformers and the discrete opamp. Great for guitars, bass, keyboards and other instruments that have a 1/4″ output jack.

  • Mic level balanced input: XLR.

  • Balanced outputs: XLR and 1/4″/TRS.

  • 48 volt Phantom Power.

  • Output attenuation control (after the CineMag output transformer) allows for driving the preamp and transformers into saturation.

  • LED Meter gain indication.

  • 20db pad.

  • External power plug.

Short Description Single channel mic-pre based on the Classic API 312 preamp and uses unique component choices that give it a very warm, exciting, opulent tone.
Demo in Store No
Manufacturer Warm Audio
Old Price No
Valve / Solid State Solid State
Channel Count Single Channel
DI Input Yes
Side Chain Input No
Chassis Alternative
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: £419.00 Ex. VAT: £349.17
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