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AmpRx

BrownBox by AmpRx (B STOCK)

BrownBox by AmpRx (B STOCK)

11 total reviews

Regular price $329.00
Regular price $349.00 Sale price $329.00
Sale Sold out
Shipping calculated at checkout.

The Original BrownBox (B-Stock)

Input: 120VAC, 60 Hz; Standard IEC AC cable
Output: Two AC Grounded Outlets, Adjustable Voltage Reduction
Power Handling: 5 Amps at 120VAC, 60 Hz, up to 540 Watts

Today, we should be receiving 120V AC from the wall, but depending on where you are and what time of day it is, you can receive anywhere from 120V to 129V. That’s not good for your amplifier, or your ears. Depending on the amplifier, a BrownBox user might discover that modern gear runs optimally at 116-118V, or as low as 108-110V for vintage gear. It’s impossible for an amplifier designed for 110V or 120V to sound or operate anywhere near the way it should at 129V.

The BrownBox features flexible voltage reductions options that let you bring your power input down to an optimal level, resulting in significantly improved amplifier performance.

THE DETAILS

  • 120 Volt AC, 60 Hz, 5 Amp Voltage Attenuator supplies up to 540 Watts, designed for small or mid to larger sized amplifiers (i.e. Fender Deluxe/Bassman/Twin, Marshall 50w/100w, Vox AC30). Can also be used for parallel or dual amp rigs.
  • Easy to read back-lit L.C.D. display enables real-time voltage and amperage monitoring - also useful for diagnostics
  • Two adjustment modes to help to fine-tune your voltage
  • Proprietary transformer design wound exclusively for use with tube amplifiers, an industry first
  • Equal or attenuated voltage output and a 5 amp fuse with in-rush current protection ensures that you will never accidentally overload your amplifier
  • Powder coated EMF neutral housing and tough road rugged construction
  • Silent, cool operation

A note about B-Stocks: One might call it “scratch-n-dent”, another might call it “relic'ed” (if that’s you, we won’t even charge you extra!). In any case, these units are perfectly functioning on the inside, but have minor imperfections on the outside. Some examples include small paint chips and color inconsistencies.

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Customer Reviews

Based on 11 reviews
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A
Aaron Steinle
Don't leave home without it!

If you want your amp to be consistent between home, rehearsal, stage, and studio, just buy one. Carry it with you and use it everywhere. It's killer. Then buy at least one spare just in case.

J
Jason Tutwiler

easy and quick!
functions perfectly

D
Derick Cordoba
B Stock BrownBox is Great!

I already own one BrownBox. I bought a second B Stock. I can't figure out why it's labeled as B Stock. It looks and performs perfectly. Great product!

C
Cliff Barone
Works seamlessly!

I have used the BrownBox for a couple weeks, including a big outdoor gig. It works easily and seamlessly, behind the scenes to optimize my amps performance. Thanks AmpRx!

R
R.K.
Brown Box-Happy customer!

I bought a B-Stock direct from AmpRx. Shipped quickly and I couldn't find anything to indicate it could be a B-stock. The unit works great and is easy to use. I did email the company with a couple of quesitons and they responded quickly and clearly and were a pleasure to chat with. Recommended product and company.