| TPA-200B Dual Tube Preamplifier
The Summit Audio TPA-200B Dual Tube Preamplifier combines the best of two worlds: vacuum tubes and high quality solid state. This unique combination creates an environment that yields the warmth associated with tubes without the inherent high frequency loss while providing the reliability of solid state components. The TPA-200B is designed to work in a variety of applications using three input types: microphone input, line level input, and front panel Hi-Z input.
The TPA-200B is a great companion in the studio as it works great for both recording and mixing. That's right, mixing. Use the line inputs and run any signal through the TPA-200B to add a little warmth, or full tube distortion and any tone in between. The ability to control the input and output gains individually allow you to overdrive the tube in any amount when tracking or mixing, from very clean and clear to a riot of tube fuzz. But don't let the three 12AX7A vacuum tubes fool you, the TPA-200B has an open and airy top end that shines with dynamic and diverse signals, even those with dense frequency content such as voice and electric guitars. The signature sounds of Summit Audio's TPA-200B is perfect for eradicating sterility from the cold, hard digital world.
Key Features:
-Microphone, Line & Hi-Z inputs
-Uniquely controllable from "Clean" to "Overdrive"
-Front panel Hi-Z input
-Pad Switch & Phase Switch
-48 volt phantom power
-Jensen input transformers
-Overload and Overdrive indicators
-3 year warranty
-Hand crafted in the U.S.A.
Output: +4 dBu corresponds to 0 VU. The output is electronically balanced or unbalanced using 990 operational amplifiers. Output impedance is 75 ohms. The recommended output load is 600 ohms or more. Maximum output level is +25dBu.
Input: The input is transformer balanced. The mic input impedance is 2k ohms, the line level input impedance is 20 k ohms and the Hi-z input impedance is one mega-ohm. The mic and line inputs are balanced; the Hi-z input is unbalanced.
Pad Switch: -15 dB and -25 dB positions.
Panel Size: Standard 19" by 3.5" (two units of rack space).
Depth Behind Panel: 10.5" in addition to user's I/0 cabling.
Power: 35 watts, 115 or 230 volts operation, 50 or 60 Hz.
Components: (3) selected I 2AX7A vacuum tubes, (4) high reliability 990 discrete, operational amplifiers, (I 2) integrated circuits, (9) transistors.
Shipping Weight: 19 lbs. (8.62 kg.)
Basic operation instructions
Getting a clean microphone signal: Plug the microphone into the mic input on the back of the TPA-200B and set the input switch to mic (and the phantom switch on for condenser mics needing 48v phantom power). Turn the output gain up very high, then slowly turn up the input gain to the desired recording/ monitoring level.
Getting tube guitar distortion: Plug the output of the guitar into one of the Hi-Z inputs on the front of the TPA-200B. Turn the output gain low. Turn the preamp input gain up high (start at about 7) and play the guitar. The OD light should be blinking or steady yellow. Then slowly turn up the output until you reach the desired recording/ monitoring level. Slowly increase the input gain and decrease the output gain to get the perfect tube distortion while keeping the overall level under control.
Getting a warm bass tone: Plug the bass directly into the Hi-Z input. Turn the output gain knob very low. Turn the input gain up until the OD light just starts to flash while the bass is being played (the flashing light indicates soft clipping). Turn the output gain knob until you get the desired recording/ monitoring level. This can also be done if the bass is plugged into a direct box. Just take the XLR out of the DI into the mic input on the TPA-200B and set the input switch to Mic.
Mixing: The TPA-200B works great as an effect when mixing, for adding warmth, tone, or distortion to any signal. Route an aux. output to the line level input and back into your mixer or interface to add some tube sound or use as insert effect and use the gains on the TPA-200B to control the level.
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