Warm Audio WA12 Mic Preamp (Discontinued)


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Warm Audio WA12 Mic Preamp

Gearank High Notes

Warm Audio WA12: Highest Rated Microphone Preamp Under $500 - 2017.02

Gearank Recommendation

The Warm Audio WA12 appeared on our recommended list for Microphone Preamps in our first edition back in February 2017 and remained there until May 2017 when it was removed due to being discontinued.

Warm Audio WA12 Single-Channel Mic Preamp

While other preamps aim to be as transparent as possible, the Warm Audio WA12 takes the opposite route.

It is meant to color your sound with its 1731-style high voltage amplifier and dual transformer design.

It has up to 71dB of gain for powering any type of microphone, including ribbon mics of which this preamp is commonly used with.

Other features include tone button that lets you switch input impedance, 20dB pad, phantom power and it has a true hi-Z input for use with electric guitars and basses.


  • Channels: 1
  • Mic Preamps: 1 Dual-Transformer Mic Preamp
  • Input Connectors: 1 x Combo XLR-1/4", 1 x Hi-Z
  • Output Connectors: 1 x XLR
  • Controls: -20dB Pad, Phantom Power, Polarity Switch, Transformer Tone Switch
  • Dimensions: 14" x 13" x 4"
  • Weight: 6.6 lbs.
Warm Audio WA12 Mic Preamp Back View
The WA12 back panel.
Unfortunately it's very hard to find one in stores these days, so if you're looking for a new preamp then check out our guide to The Best Microphone Preamps.