Warm Audio TB12 Tone Beast Microphone Preamplifier (Black)

Product #91288 | SKU TB-12 B Tonebeast | Warm Audio
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Our Price $1,185.00
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  • Mic, Instrument & Line Inputs
  • Up to 71 dB of Gain
  • Output Gain Attenuator
  • Switchable Discrete Op-Amp
  • Switchable Input Impedance


Warm Audio TB12 Tone Beast 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 is a mic pre that likes to be pushed and when pushed will colourise 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 Black is customisable 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.

The TB12 Tone Beast is a fully discrete, high-voltage microphone preamplifier, utilising 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 Black 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.


Type Discrete 312 Preamp Design with Coupled CineMag Transformers
Input 1 x Front-Panel XLR Microphone Input
1 x Front-Panel 1/4" / 6.35 mm Hi-Z Instrument Input
1 x Rear-Panel XLR Microphone Input
1 x Rear-Panel 1/4" / 6.35 mm TRS Line Input
Output 1 x Rear-Panel Balanced XLR Line Putput
1 x Rear-Panel Balanced 1/4" / 6.35 mm TRS Line Output
Gain 71 dB
Transformer Selectable Steel or 50% Nickel CineMag Output Transformers
Selectable Transformer Bypass
Op Amp Selectable between 1731 and 918 Style; Socketed and Swappable with Your Choice of 2520 6-Pin Footprint Op Amps
Impedance Input Impedance: Switchable Between 150 and 600 Ohms (Labelled "Tone" on Front-Panel)
Capacitors Switchable between Tantalum and Electrolytic for Different Characters
High-Pass Filter 80 Hz
Polarity Reverse Yes
Phantom Power +48 V
Output Attenuation Yes; Allows for Saturation Flexibility of Both the Op Amps and Transformers
Insert 1 x 1/4" / 6.35 mm Insert Send
1 x 1/4" / 6.35 mm Insert Receive
Pad 20 dB
VU Metre LED
Rack Units 1 RU
Power External Line-Lump 24 VAC Power Transformer for Low Noise
Dimensions 482.60 x 44.45 mm

In The Box

  • Warm Audio TB12 Tone Beast Microphone Preamplifier (Black)
  • 24 VAC Power Transformer


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  • Product: Warm Audio TB12 Tone Beast Microphone Preamplifier (Black)
  • Manufacturer: Warm Audio
  • Model: TB-12 B Tonebeast
  • SKU: TB-12 B Tonebeast
  • RM Product #: 91288

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