Presenting the AmpRx BrownBox Voltage Attenuator for Guitar Amplifiers. The BrownBox was created to provide a safe range of voltage reduction levels for vintage tube amplifier designs. The same, era-correct voltage levels that the amps were designed around. The dynamics of a vintage amp supplied with the proper line voltage are optimized and will sound and respond as originally intended, revealing the circuit's true harmonic content. This is the starting point, the basis of the signal chain, and where serious musicians begin creating a signature tone. Most vintage tube amps respond more harmonically and touch sensitive with optimized voltage . Placing these circuits back into balance reveals the authentic tone fundamental of the amp, tone that can truly blossom. Why do you need Voltage Optimization for your amp? Voltage Optimization provides numerous benefits: Establishes the basis for your signal chain and the starting point in building a consistent signature tone. Earlier power tube saturation equals earlier break-up at more usable volume levels . A smoother tonal shift toward even order harmonics, revealing the amplifier's true designed tone fundamental . Lower internal voltages = lower dissipation = longer component life. For the Tube Tone Purist, no pedal or attenuator can come close to replicating the heavenly response of dry, purely saturated tubes. Pedals and attenuators have their place, keeping in mind that they color your tone, not create it. Everyone can enjoy multi-dimensional, pure tube tone, if they just know where to start. The AmpRx BrownBox is NOT a variac. Unlike a variac, Brownbox cannot accidentally harm or destroy your amplifier. The maximum input voltage available using BrownBox is your regional line wall voltage, in bypass mode. All other selections are reduction levels that you determine sound best for your amp. The BrownBox employs a proprietary, American made, 5 amp transformer, intended for use with one amplifier. AmpRx's proprietary transformer was custom wound exclusively for use with tube amplifiers - no off the shelf transformers or test-bench variac's here! The BrownBox was created by a team of experienced player/ technicians with the professional player in mind. That meant first it must be intuitive and easy to use every time. Secondly, it must also have a road rugged design and be able to take abuse. Thirdly, it must be practical and superior to any other voltage reduction option. The BrownBox is completely proprietary in design and function and comes with a lifetime warranty with normal use. Caution: BrownBox and related Products are A/C Electrical devices designed for professional use. Use by non-professionals or minors should be fully supervised. Serious injury or Death can result from tampering with or opening the chassis." For Use in DRY locations only". User assumes all liability. Opening of the Chassis voids the warranty. Easy to read, back-lit L.C.D. display enabling real-time voltage and amperage monitoring, also useful for diagnostics. Tough road rugged construction. Proprietary Transformer designs wound exclusively for use with tube amplifiers, an industry first! Filament soft-start in full reduction mode. A powder coated EMF neutral housing. In-rush current protection, fused over-load protection . Silent , cool operation. Custom wound 5 amp proprietary transformer that will supply 540 watts max@ 120 Vac. Designed for Mid to larger sized Amps , Fender Bassman, Marshall 50s/100S Etc or for Parallel or( DUAL) amp rigs.Be sure to Check the Manufactures info plate on the rear of the Chassis for input watt requirements or simply call us, we love to help. LIFETIME WARRANTY. Made in the USA
We accept all major credit cards (orders must ship to the billing address of the cardholder or authorized ship-to address for their account), PayPal (shipped to a PayPal confirmed delivery address), Financing through Blispay, Wire Transfer in advance in US Funds, or COD (Cashier's Check only).
We ship most any order placed before 3pm CDT Tuesday through Friday the same day. Orders placed Saturday-Monday will ship the following Tuesday. For new products we will only ship to delivery addresses within the United States. Most pedals are shipped via Priority Mail. Guitars and Amplifiers are shipped via UPS Ground. Other shipping methods are available. Please contact prior to placing your order for shipping cost quotations to your delivery address.
The Guitar Sanctuary does accept returned items as long as arrangements are made for such within 48 hours of purchase/receipt. Returned items MUST be in the original condition and packing (including owner’s manual, un-used warranty card, any other items that came with the item) in order to qualify for a refund. No refunds are available for “special” ordered guitars or amplifiers (items that were not in stock, but rather ordered per the customers request. The customer is responsible for all freight charges and credit card processing fees incurred in the course of the sale. We cannot refund freight charges. The Guitar Sanctuary will charge a 20% restocking fee for returned effects pedals and amplifiers and a 10% restocking fee for Guitars. The only exceptions are for products that are defective. Please only purchase an item after you are certain it is right for you! Layaway: You can lay-a-way any product for a maximum of three months. Lay-a-way requires a 25% non-refundable deposit. We will not be able to ship the item until it is paid for in full and as a lay-a-way purchase, does not qualify for the 48 hour approval policy. International Sales: We can ship most guitars and other products internationally. We prefer money orders, cashier’s checks, or bank wire transfers in U.S. dollars. Shipping quotes are only valid for 48 hours. Please consult with your local officials about taxes, duties, currency exchange rates, etc.