Buy a Tone Beast TB12, get 4 Prem-XLR-20 Cables at participating retailers through March 31
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Tone Beast TB12

Dual-Voice American Mic Pre

Single-Channel, Console-Grade Mic Pre With User-Switchable Tone Control For Shaping Your Sound

msrp $649

TB12 "Tone Beast" - Single-Channel American Mic Pre

Console-grade mic pre for shaping your sound with user switchable, dual-tone control and added extra punch
MSRP $649

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Unleash the beast!

The Tone Beast TB12 is a fully professional preamp design with loads of gain that can effortlessly capture an array of sources very well. It is a swiss army knife full of options and tones. With top notch CineMag transformers and multiple discrete signal paths, it's hard to beat the Tone Beast's big, bold, fully-professional sound at this price.

The Tone Beast TB12 is a mic pre that likes to be pushed and when pushed will colorize your signal ever so sweetly. The 2 opamps and 2 output transformers at the flip of their switches won't appear to be much different, but as one drives the pre into harmonic distortion, the unique character of each of these components becomes apparent. The Tone Beast TB12 is customizable and allows users to source and swap in their own opamps. The output control on the TB12 allows you to limit the signal exiting the preamp even when pushing the gain to really hot levels, giving you maximum control.

When designing the Tone Beast TB12 our goal was to make a microphone preamplifier affordable and jam packed full of options, without compromising the quality and design parameters that make this type of microphone preamplifier so desirable.

Premium Components

The Tone Beast TB12 is a fully discrete, high-voltage microphone preamplifier, utilizing CineMag USA Transformers. Have no fear of hurting the Beast, you can push it very hard into full-on distortion if you wish, and these can sound quite nice on electric guitar, bass or anything else that likes some grit.

The different component options in the TB12 are subtle, but when driven into saturation are noticeable and can make a big difference to the way your final mix will sound. Home-based musicians and professional studios alike will find the Tone Beast TB12 to be an extremely powerful and fully professional piece of gear that is capable of warming and shaping signals/mixes in a way that is very pleasing to the ear.


Technical Specifications

  • 71db of gain

  • Transformer selection provides both Steel and 50% Nickel CineMag output transformers for varying character

  • Transformer bypass switch allows for removal of the output transformer from the circuit

  • Discrete Opamp selection allows for choosing between a 1731(vintage) and 918(cleaner) style opamp. These are socketed/swappable with your choice of 2520 6 pin footprint opamps

  • Impedance switch labeled TONE to switch between 150 and 600 ohms input impedance

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

  • 80hz hipass filter

  • Polarity Reverse
  • Utilizes premium grade CineMag USA Transformers

  • +48V phantom power

  • Output attenuation allows for saturation flexibility of both opamps and transformers

  • ¼" insert for the use of inline compressors, eq's etc

  • Balanced XLR mic (front and back), balanced TRS line, and ¼" UNBALANCED instrument inputs

  • Balanced XLR and TRS outputs

  • -20db Pad

  • LED VU Meter

  • 19" rackmountable


  • Capacitor selection between Tantalum and Electrolytic for different characters

Sound Samples

Magazine Reviews


As someone whose main focus is tracking, I try and get the source to sound as “mix-ready” as possible and the WA TB12 has upped the front-end game by quite a lot. With a ton of sonic variations that the TB12 allows me, I can now dial in the exact vibe/mojo I’d like on my guitar/bass/keys tracks!

Victor Lee

"The Warm Audio products are spectacular, when you process your audio signal you can feel the change immediately, it's my new weapon on tour."

German Tarazona - (J Balvin, Jarabe De Palo, Cali y El Dandee, Aterciopelados)

“Using great gear is a vital part of making good music. The amazing prices are just added benefits. The Warm Audio gear is second to none and plays a big role in my studio. Can’t say enough great things about it!”

barry weeks

"The combination of the TB12 Tone Beast and WA-2A has been a real game changer in my vocals and bass tone."

James Cook - Luke Bryan