Warm Audio
Warm Audio TB 12 Tone Beast
Best versatile preamp for home studio owners seeking professional tones.
The Warm Audio TB12 Tone Beast Black is a professional microphone preamplifier and DI box that offers a distinctive character. It features two discrete op-amps, two output transformers from Cinemag with different sonic profiles that can be bypassed, and switchable input impedance. A 2 MOhm Hi-Z input on the front is ideal for passive instruments, complemented by an 80Hz high-pass filter. Users can choose between the vintage-style 1731 op-amp for more coloration or the clean, modern 918 op-amp. The unit also includes a +6dB tone circuit and output attenuation for flexible sound shaping, along with a 1/4" insert for external processing.
$579.00
Owner Satisfaction
4.7
/ 5
Category Rank
44
/ 565
#44 in Microphone Preamps
Price vs Category Average
-64%
Below average
Manufacturer
Warm Audio
/ Warm Audio
Who it's for
- Recording engineers seeking diverse sonic textures for various instruments.
- Audio professionals desiring premium sound without the boutique price tag.
- Studio owners and touring musicians needing reliable, long-lasting equipment.
Who should skip it
- Novice engineers or those preferring a simpler, "set-and-forget" workflow.
- Producers needing multiple channels for simultaneous stereo or multi-mic setups.
- Musicians with limited desk space or portable recording rigs.
Performance breakdown
Tonal Versatility
Switchable transformers and op-amps offer a massive palette of sonic textures.
Gain Range
71dB of clean gain handles even the most demanding ribbon microphones.
Impedance Flexibility
Vari-Z control allows precise matching for any microphone or instrument source.
Build Integrity
Robust chassis and high-quality CineMag transformers ensure long-term studio reliability.
DI Functionality
The 2 MOhm Hi-Z input captures guitar and bass signals beautifully.
Signal Shaping
Integrated tone circuit and output attenuation provide exceptional control over saturation.
Key Specs
Manufacturer
Warm Audio
Amplifier principle
Operational amplifier
Number of channels
1
Format
19"
Max. Gain in db
71
Phantom Power
48V
Hi-Z Inputs
1
Highpass filter
Yes
Features
- Switchable output transformers for sonic flexibility
- Interchangeable op-amps for different tonal characteristics
- High-Z input for direct instrument connection
- Switchable input impedance for tonal shaping
- High-pass filter to reduce low-end rumble
- Insert point for external processing
- Phase reversal for phase alignment
- Pad for handling hot signals
What customers say
Customers consistently praise this preamp for its exceptional sound quality and remarkable versatility. Many users highlight its ability to deliver a wide array of professional tones, from clean and transparent to rich and colored, making it a valuable tool for diverse recording applications. The robust build quality also receives frequent commendation, reinforcing its reliability. Users often express surprise at the premium performance offered at its price point, underscoring its outstanding value. This preamp is celebrated for elevating recordings with its distinct sonic character and flexible options.
Know before you buy
The TB12 includes a 1731-style op-amp, which provides a vintage, colored sound, and a 918-style op-amp, which offers a cleaner, more modern response. You can easily switch between them to match the character of your source material.
Yes, the front-mounted 2 MOhm Hi-Z input is specifically designed for passive instruments. It allows you to plug your guitar or bass directly into the preamp to capture a high-quality signal before it hits your interface.
The TB12 features two different CineMag output transformers that allow you to toggle between distinct sonic profiles. One provides a more vintage, saturated character, while the other offers a cleaner, more transparent signal path.
The Tone button engages a circuit that shifts the input impedance and changes the frequency response of the preamp. It adds a subtle +6dB boost to specific frequencies, giving you an extra layer of tonal shaping beyond standard gain adjustments.
Yes, the 1/4" insert point allows you to patch in external processors like compressors or equalizers after the preamp stage but before the output transformer. This gives you more flexibility in your signal chain without needing a complex patch bay.
With a maximum gain of 71dB, the TB12 has plenty of headroom to drive most low-output ribbon or dynamic microphones cleanly. It is well-suited for capturing quiet sources without introducing excessive noise.
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