Warm Audio TB12 Tone Beast Microphone Preamplifier

Warm Audio TB12 Tone Beast Microphone Preamplifier

Warm Audio TB12 Tone Beast Microphone Preamplifier

B&H # WATB12 MFR # TB12
Warm Audio TB12 Tone Beast Microphone Preamplifier

Warm Audio TB12 Tone Beast Microphone Preamplifier

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Product Highlights

  • Mic, Instrument, & Line Inputs
  • Up to 71dB of Gain
  • Output Gain Attenuator
  • Switchable Discrete Op Amp
  • Switchable Input Impedance
  • Switchable Output Transformer
  • Switchable Capacitor
  • 48V, Polarity Switch, 20dB Pad
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  • 1Description

The TB12 Tone Beast Microphone Preamplifier from Warm Audio is a single-channel mic preamplifier this is designed to provide a wide range of tonal options for mic, instrument, and line-level sources. It is capable of up to 71dB of input gain, and employs an output attenuator, allowing you to drive your input signal harder for color and saturation while keeping your signal from peaking.

The TB12 Tone Beast lives up to its name by allowing you to select between two different discrete op amps, two different output transformers that can be bypassed altogether, two input impedance settings for dynamic, condenser, or ribbon mic optimization, and two different capacitors. The preamp is capable of producing colored, vintage-style tones with early break up and clean, transparent modern tones. Thanks to its front-panel Hi-Z instrument input, the preamp can be used to record DI tracks, while the rear-panel 1/4" line input allows you to use the TB12 to provide color or warm up previously recorded tracks.

The rear-panel insert send and receive 1/4" connectors let you integrate an external signal processor, such as an EQ or compressor, into the TB12's signal flow before the output transformers. The unit features 48V phantom power, a high-pass filter at 80Hz, a 20dB pad, and a polarity reverse switch.

Op Amps Switch
This switch allows you to choose between 2 completely different discrete analog operational amplifiers. One of the op amps is built to the schematic of the classic 1731 style op amp, using a Melcor 1731, and the other to the schematic of the 918, employing Dean Jensen's 918. The 1731 has a more noticeable "vintage tone," breaking up faster and providing a more colored sound. The 918 is more linear/transparent, and does not break up as quickly
Both op amps are socketed and use the classic 2520 6-pin footprint. This allows users to remove the op amps easily (without soldering), and replace them with their own op amps of choice
Output Transformer Switch
This feature allows you to switch between 2 CineMag output transformers of different tone/make. The 100% steel core transformer sounds more "vintage" with a "mid-forward" tone. The 50% nickel core transformer has a "cleaner" tone than the steel, providing more highs and lows, and was custom designed by CineMag specifically for the Tone Beast
The nickel version uses a laminating method that gives the signal a more linear response than the steel option, but still treats the signal slightly, giving your signal a smoothness
The Output Transformer Bypass Switch removes both the nickel and steel transformers from your output signal, and provides a transparent tone. Please note bypassing the output transformers will result in an 8dB drop in level
Tone Switch
When engaged the input impedance of the Tone Beast is 150 ohms. When disengaged the input impedance of the Tone Beast is 600 ohms. The 150 ohm (switched-in) setting increases the gain of the Tone Beast by +6db changing the maximum gain from +65 to +71db. This feature will make a noticeable tone change to most microphones and instruments. The microphone, line and Hi-Z inputs are all altered by this feature
The 600 ohm impedance setting is recommended for condenser and dynamic microphones, and 150 ohms is recommended for ribbons. This switch is labeled "Tone" for a reason though, we so experiment with both settings on all sources to find the best possible tone for your mixes
Capacitor Switch
This switch changes 2 capacitors in the circuit from Tantalum to Electrolytic. The "vintage" setting is for tantalum capacitors, the "clean" setting is for electrolytic. Of all the tone features provided in the Tone Beast this option is the most subtle but still noticeable to many ears depending on the source being treated
UPC: 639713908251
In the Box
Warm Audio TB12 Tone Beast Microphone Preamplifier
  • 24 VAC Power Transformer
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description
    Type Discrete 312 preamp design with coupled CineMag Transformers
    Input 1x front-panel XLR microphone input
    1x front-panel 1/4" (6.3 mm) Hi-Z instrument input
    1x rear-panel XLR microphone input
    1x rear-panel 1/4" (6.3 mm) TRS line input
    Output 1x rear-panel balanced XLR line output
    1x rear-panel balanced 1/4" (6.3 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 Ω (labeled "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 1x 1/4" (6.3 mm) insert send
    1x 1/4" (6.3 mm) insert receive
    Pad 20 dB
    VU Meter LED
    Power External line-lump 24 V AC power transformer for low noise
    Packaging Info
    Package Weight 5.9 lb
    Box Dimensions (LxWxH) 14.3 x 12.7 x 2.7"

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