• This is a tube mic pre for the studio. With Phantom power, and true transformer output, plus an available gain of +55db, The Brick will handle dynamic mics, consensor mics, and ribbon mics.
• A tube mic pre for the stage - with onboard phantom power, you can now use higher grade large diaphram mics on stage. Forget about those long cable runs back to the "house system" or house console, The Brick can run 1000 feet and more without the losses of simple direct boxes.
• A tube line driver
• A tube instrument preamp for the studio - based on our exclusive ViPRE technlogy.
• A tube instrument preamp for the stage.
• Groove Tubes offers a 1-year warranty.
  

This is the ultimate DI box and instrument preamp for both stage and studio. Allows for isolated balanced low impedance output for all instruments. Provides either unity gain or use the variable output level control for up to 55dB of all tube gain! perfect tube tone and isolaton for vintage keybords, electric bass and acoustic/electric guitars with iternal transducer type pickups. Onboard phantom power allows the use of high quality condensor mics on stage.

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