AmpRx creates products that help you supply your gear with the correct voltage
Here’s the quick rundown: The BrownBox is an adjustable AC power supply for your amp or tube gear that helps you run your equipment at the optimal voltage. Plug the BrownBox into the wall, adjust the voltage and then plug your gear into the BrownBox.
When a tube amplifier is supplied with the proper line voltage, it will sound and respond as originally intended, revealing the circuit’s true harmonic content, and preventing unnecessary, expensive, and frustrating repairs.
BrownBox users testify time and again as to how their amp’s tone, touch and feel have finally come together, providing them with improved harmonics and dynamic amp performance- allowing them to capture the elusive tone they’ve always wanted, every time, everywhere.
NEW! THE BROWNIE IS HERE
The Brownie by AmpRx is the latest innovation in voltage optimization, providing musicians with unparalleled control, flexibility, and protection for their gear. Designed specifically for modern tube amplifiers, the Brownie is a voltage controller offering the option to increase and decrease voltage. The Brownie is the ultimate solution for achieving consistent tone and protecting valuable equipment - the first of its kind.
WHAT PEOPLE ARE SAYING ABOUT THE BROWNBOX
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Brownie by AmpRx (50/60hz)
Regular price From $279.00Regular priceUnit price per$299.00Sale price From $279.00Sale -
BrownBox by AmpRx 50/60 Hz
Regular price From $349.00Regular priceUnit price per$379.00Sale price From $349.00Sale -
Sold outBrownbox II By AmpRX (Legacy)
Regular price From $289.00Regular priceUnit price per$399.00Sale price From $289.00Sold out -
BackLine 1200 by AmpRx
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AmpRx Coffee Mug
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CHECK OUT THIS EPIC SHOUTOUT FROM DR.Z!
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Let customers speak for us
Takes that brittle edge off the top of my Bassman. You don’t know you need it till you get it. Eases stress!
I’m very happy with my purchase of the Brownie. It’s more compact than the regular Brown Box and more suited to the types of amps I gig daily
If you play vintage tube amps from the 50s or 60s you need one of these. You'll be able to tell instantly that you needed it all along...
Shipping was fast, and I got my second "Brownie" in, it looks and operates just like the non B stock Brownie, and at a discount price!
Received my AmpRx mugs patches and swag. Y'all are life savers. Just rack3d my new Power Station 1200...an absolute amp saver. My tracks have never sounded better. Keep up the great work!!! - Coop
The Brownbox is an essential piece of gear. All of my new and vintage amps sound better with the brown box. My house has 123-125volts, everything sounds a little hard at that voltage. Reduced voltage makes my black face amps creamier and my tweet amps sweeter.
I love this with shirt. Purchased it with an extra patch.
Thanks for processing the order quickly and the fast shipping!
Yep. Does what y’all say it does. Got an old Deluxe (as most do, I suppose), that sounds better than it ever has. Hell, I’m even using it with old tube mics, pre’s & compressors. ALL sound … well … better - thanks!
This is a tour grade, durable little box! Easy to dial in, and a good safety measure for spikes in power etc. I also like that you can feel a differences. For my '65 Bandmaster head, I find that the BrownBox smooths out the high end and gives the response a fuller, rounded out feel by lowering the voltage to 117v. Thank you AmpRx!
This thing is awesome, it does what the Brownbox does and more! You can dial down the voltage OR dial it up if need… the world is better because of this little dude… it fits in the back of my amp, it loves me, it helps me not blow sh*t up, if only it could make me a sandwich….. hmmm…… 😎
