AMPRX BROWNBOX – Voltage Control 220-240V

AMPRX BROWNBOX – VOLTAGE CONTROL FOR VALVE AMP PURISTS
Exclusively at Max Guitar – Official Dealer for the Benelux 

What It Does (and Why It Matters)
Modern wall voltage is typically 220–230V (110–120V in US territories). Most vintage-style amps were designed for less voltage. That extra juice doesn’t give you “more tone”—it gives you:
• Shorter tube life
• Harsher breakup
• Overstressed transformers and caps
The BrownBox fixes this by dropping voltage in precise 1V steps, letting your amp breathe like it was designed to.

Why It Beats a Voltmeter + Variac Combo
Sure, you could use a variac and voltmeter. But then you’re:
• Guessing at safe zones
• Carrying extra gear
• Gambling with transformer quality and mains noise
The BrownBox solves all that in one unit:
• Voltage readout and control
• Built-in “Safe Zone” indicator
• Dead quiet – no hum, no interference
• Made for tube amps—not repurposed lab gear
It’s smarter, safer, and doesn’t require tech skills to protect your amp.

Tone and Feel – Transformed
Drop the voltage and you’ll notice:
• Sweeter top end
• More responsive breakup
• Improved touch dynamics
Vintage Fenders, Marshalls, Tweeds, hand-wired boutiques—they all shine when fed the right voltage. We hear it every day at Max Guitar. Once you’ve felt it, there’s no going back.

Why Buy from Max Guitar?
We’re not box shifters. As a Premium AmpRX Dealer, we:
• Stock, demo, and support BrownBoxes properly
• Match them to your exact amp setup
• Use them ourselves—onstage, in-store
• Let you hear the difference right here before you buy

Bottom Line
If you play through tubes and care about tone, touch, and longevity, the BrownBox isn’t optional—it’s essential. It replaces two tools, adds safety and precision, and lets your amp sound like itself. Want to try before you buy? Pop by—we’ll plug you in.