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Warm Audio TB12 500 Tone Shaping Mic/Inst Preamp - Used From Warm Audio
Affordable single-channel mic preamp featuring American made Cinemag I/O transformers and multiple discrete signal paths, all condensed to fit the 500 series format.
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What We Think
This is a preamp with options, lots of options (various signal path selection and output transformer select or bypass just to name a couple). Hands down one of the most well conceived pieces of gear to come my way in a while. This sort of flexibility really gives a tweaky gear geek such as myself a lot to play with.
To start with I wanted to see just how clean this unit could sound so for input I selected the 918 op amp path and bypassed the output transformer all together. The signal still had a nice touch of character and color, but overall it was very detailed and responsive with plenty of punch. I also did a good deal of gaining up the input and trimming the output to see how it performed when pushed a bit harder - needless to say the signal became fatter, richer, and “wooly” (in a good way!). I spent a good deal of time trying different combinations and walked away with some session notes pointing me to some very useable and very diverse color options.
Manufacturer's Description from Warm Audio
The Tone Beast is a great mic pre with loads of gain that can effortlessly capture an array of sources very well. With top notch CineMag transformers and multiple discrete signal paths, it's hard to beat its big, bold, fully-professional sound at its price.
The Tone Beast 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. Additionally the Tone Beast is customizable and allows for other opamps to be sourced and easily swapped into the unit. I've pulled my best tones from this pre right at the saturation point (as loud as I can push the gain before clipping). 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 x731 (Melcor 1731) and x18 (Dean Jensen's 918) Op Amps saturate a bit differently. The 1731 breaks up faster and has more color when pushed. The 918 is fairly linear/clean with a smidge of character and does not break-up/saturate as quickly. The 100% steel output transformer colors the signal more than the 50% nickel transformer when pushed. However, both are designed to impart character. The 50% nickel transformer will impart less character and provide greater high and low frequencies. For an ultra clean, character-lacking tone, try the x18 while bypassing the output transformers completely.
Have no fear of hurting the Beast, you can push it very hard into full-on distortions if you wish, and these can sound quite nice on electric guitar, bass or anything else that likes some nice grit.
When hand building mic pres I learned a bit about the "subtle" differences component choices can make. A little change here, and another there often times became a huge deal in a finished mix, but often times is not very noticeable at first take. 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 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.
History Behind The Tone Beast
In the 60′s and 70′s many console/preamplifier builders hid the operational amplifier (Op amp) stage of their preamps by cramming its components into a small box and then attaching the box to the circuit board. Inside these small boxes, the components were covered in glue to make them hard to disassemble/analyze. Manufacturers of that day felt the character these Op Amps imparted was unique enough to protect.
A trend grew in the industry where the little box the Op Amp components sat in became of similar size and shape between manufacturers. These boxes eventually mounted to the PCB board with the same number of pins, spaced identically, even from different manufacturers. You could remove an Op Amp from one console preamp and place it in another of a different manufacturer without much headache/difficulty.
The TB12 uses this same square shaped op amp and pin configuration as these originals but not enclosed in plastic and glue. The TB12 is designed so that users can remove the stock opamps and replace them with their own. If you are a tone FREAK like me you will love the ability to do this. Beware that Warm Audio may not be able to warranty a unit that has been opened and tinkered with. Below are some examples of 6 pin opamps that can pop right into the Tone Beast!
About Manufacturer
Warm Audio's goal is to put high-end gear in the hands of the world’s greatest artists, talent deserves to be properly expressed. Many great musicians are never heard in the right light due to budget restrictions, Warm Audio hopes to change this by bringing fully professional designs to all studios at affordable prices. Don't let our price tags fool you, all of our products have completely discrete signal paths and feature custom USA made CineMag transformers that are found in only the best designs in pro audio.
I am asked often how Warm Audio is able to produce such high quality gear at affordable prices, many assume corners must be cut somewhere. My answer to this question continues to be "NO". Warm Audio stays true to original discrete schematics and does this without cheapening components such as our continued use of world class Reichenbach/CineMag transformers.
Specifications
- Discrete 312 preamp design with coupled CineMag Transformers
- 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 provides both the classic 1731(vintage) and 918(cleaner) style opamps. 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
- Capacitor selection between Tantalum and Electrolytic for different characters
- 80hz hipass filter
- Polarity Reverse
- +48V phantom power
- Output attenuation allowing for saturation flexibility of both the 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" instrument inputs
- Balanced XLR and TRS outputs
- -20db Pad
- LED VU Meter
- Designed for use in standard 500 series power racks
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