Unlock the full potential of your tube amplifier with the AmpRX BrownBox Tube Amplifier Input Voltage Attenuator. Designed for discerning musicians and audio engineers, the BrownBox ensures your amp runs at its optimal voltage, a crucial factor in achieving superior tone and performance. Many vintage and even some modern tube amps are compromised by the standard 120V AC wall voltage—often too high for ideal operation. This is where the BrownBox steps in with its proprietary 5-amp transformer, offering precise attenuation to bring your voltage to the sweet spot.

Not only does this optimize your amp's performance, but it also extends the lifespan of your precious tubes, saving you time and money on replacements. The BrownBox features an onboard LCD voltmeter, allowing you to easily dial in the perfect settings. Choose from four different voltage-reduction modes to tailor the output to your specific needs, and use the bypass setting to compare the before and after effects on your sound. Built with a braced metal chassis, it’s tour-ready and robust, perfect for musicians on the move.

Key Features:

• Optimizes input voltage for full-sized tube amps
• Extends the life of high-performance power tubes
• LCD voltmeter for easy voltage adjustments
• Selectable input voltage settings for safe operation
• Four attenuation modes: 3%, 4%, 6%, and 10%
• Bypass mode for A/B comparisons
• Durable metal chassis for touring durability

Product specs

FAQs

How does the AmpRX BrownBox protect my tube amplifier?

The AmpRX BrownBox reduces the input voltage to your tube amplifier, allowing it to operate within optimal voltage ranges and minimizing wear on components, thereby extending the lifespan of your amp.

Can the AmpRX BrownBox be used with any tube amplifier?

Yes, the AmpRX BrownBox is designed to work with most tube amplifiers by providing adjustable voltage attenuation to suit various amp requirements.

What power capacity can the AmpRX BrownBox handle?

The AmpRX BrownBox can handle up to 540 watts at 120V AC, making it suitable for use with a wide range of tube amplifiers.

Does the AmpRX BrownBox affect the tone of my amplifier?

The AmpRX BrownBox is designed to maintain your amplifier's natural tone by ensuring it operates at optimal voltage levels, reducing the risk of tonal degradation due to voltage fluctuations.

Is the AmpRX BrownBox suitable for international use?

The AmpRX BrownBox is designed for use with 120V / 60 Hz power systems. For international use, ensure compatibility with local voltage and frequency standards.