Warm Audio Tone Beast
Key Features & Tone Options
- Op-Amp Switching: Choose between a vintage Melcor 1731-style op-amp (colored, punchy) and a cleaner 918-style op-amp (transparent, higher headroom). The sockets are user-swappable without soldering.
- Transformer Selection: Switch between steel and 50% nickel CineMag output transformers. Steel offers a more rolled-off, mid-focused vintage warmth, while nickel yields wider lows and highs.
- Tone Switch & Impedance: Toggles input impedance between 150 ohms and 600 ohms, adding a +6 dB gain boost when set to 150 ohms to dramatically alter the microphone's resonance.
- Capacitor Control: Switches between clean and vintage capacitor paths to further tweak harmonic distortion characteristics.
- Gain and Saturation: Offers up to 71 dB of total gain paired with an output attenuator, allowing you to push the input circuit hard for coloration while controlling the final level hitting your interface.
Product Specs:
- Condition: Very Good (Used)
- Brand: Warm Audio
- Model: TB12 Tone Beast Preamp
- Finish: Black
- Categories: Microphone Preamps
- Year: 2019 - Present
- Electronics: Analog
- Format: 19-inch Rackmount
- Number of Analog Outputs: 1
- Number of Analog Inputs: 1
- Number of Channels: 1






