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Amp Rx Brown Box Voltage Attenuater - $299 (Emmaus)
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The unit is in gear shape.
It ships with the original box.
If you have any questions about the unit please let me know.
Here is a description.
Whether you're a professional recording engineer or a consummate tone purist, if you want to get the best possible sound from your tube amp, then you need an AmpRX BrownBox voltage attenuator. All tube amps (especially vintage tube amps) are designed to run at an optimal voltage, and standard 120V/AC wall voltage is typically too high for vintage tube amps, as well as some modern designs. With its proprietary 5-amp transformer and flexible attenuation options, the AmpRX BrownBox lets you bring that voltage down to an optimal level, resulting in significantly improved amp performance.
AmpRX BrownBox Features:
The perfect way to optimize the input voltage for your full-sized tube amp
Dramatically improves your amp's performance by providing optimized voltage
Optimal input voltage also extends the life of your high-performance power tubes
LCD voltmeter makes it easy to dial in the optimal setting for your amp
Selectable input voltage setting ensures safe and accurate operation
5-amp, 120/122/124/126VAC input settings accommodate most wall voltages
Equal or attenuated output ensures that you can't accidentally overload your amp
Choose from 4 attenuation modes (3%, 4%, 6%, and 10%) to fine-tune your voltage
Bypass mode lets you easily A/B the results of your optimized amp voltage
Braced metal chassis and protective bar withstand the most brutal touring conditions