{"title":"AmpRx - Adjustable AC Power Supplies","description":"","products":[{"product_id":"amprx-brownbox-input-voltage-attenuator","title":"AmpRx - BrownBox - Input Voltage Attenuator","description":"\u003cp\u003eThe \u003cstrong\u003eBrownBox\u003c\/strong\u003e from \u003cstrong\u003eAmpRX\u003c\/strong\u003e is a voltage attenuator for tube amps, whether it's a vintage classic or the latest modern build. Modern power typically runs at higher voltages than when the classic tube amp circuits were originally designed, and the BrownBox delivers a great way to lower the voltage in the studio, at home or at a gig.\u003c\/p\u003e\n\u003cp\u003eThe BrownBox can also extend the life of the power tubes in your amp by providing the attenuated voltage levels, which keeps your power tubes running optimally. This not only increases power tube life, but it also has the added benefit of delivering voltage levels similar to the original vintage-spec, which can improve amp performance\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eFrom AmpRx\u003c\/em\u003e: \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eToday, we \u003cem\u003eshould\u003c\/em\u003e 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 specifics of your particular amplifier, you might discover that it runs optimally at as low as 112VAC. You can’t expect an amplifier that wants 112VAC to sound anywhere near the way it should at 129VAC.\u003c\/p\u003e\n\u003cp\u003eThe BrownBox features a proprietary 5 Amp transformer and flexible voltage attenuation options that let you bring your power input down to an optimal level, resulting in significantly improved amplifier performance.\u003c\/p\u003e\n\u003cp\u003eNot only that, the BrownBox itself is the very thing that can help you find your Magic Number. You may have \u003cem\u003enever even heard or felt \u003c\/em\u003eyour amplifier running on optimized voltage. The BrownBox has an easy to read LCD screen and an onboard voltmeter so you will always know exactly what voltage you’re receiving from the wall before you ever plug in your amplifier. Play through your amplifier at as many different voltages as your heart desires and you’ll hear the difference.\u003c\/p\u003e\n\u003cp\u003eWhen the dynamics of a tube amplifier supplied with the proper line voltage are optimized, it 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.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e120 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\u003c\/li\u003e\n\u003cli\u003eEasy to read back-lit L.C.D. display enables real-time voltage and amperage monitoring - also useful for diagnostics\u003c\/li\u003e\n\u003cli\u003eTwo attenuation modes to help to fine-tune your voltage\u003c\/li\u003e\n\u003cli\u003eProprietary transformer design wound exclusively for use with tube amplifiers, an industry first\u003c\/li\u003e\n\u003cli\u003eEqual or attenuated voltage output and a 5 amp fuse with in-rush current protection ensures that you will never accidentally overload your amplifier\u003c\/li\u003e\n\u003cli\u003ePowder coated EMF neutral housing and tough road rugged construction\u003c\/li\u003e\n\u003cli\u003eSilent, cool operation\u003c\/li\u003e\n\u003cli\u003eInput: 120VAC, 60 Hz; Standard IEC AC cable\u003c\/li\u003e\n\u003cli\u003eOutput: Two AC Grounded Outlets; Voltage Reduction Selectable\u003c\/li\u003e\n\u003cli\u003ePower Handling: 5 Amps at 120VAC, 60 Hz, up to 540 Watts\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AmpRx","offers":[{"title":"Default Title","offer_id":43978696261851,"sku":"BrownBox","price":379.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0202\/0250\/products\/BrownBox-front.jpg?v=1677271511"},{"product_id":"amprx-brownie-input-voltage-attenuator","title":"AmpRx - Brownie - Input Voltage Attenuator","description":"\u003cp\u003eThe team at AmpRx have taken their attention to detail and quality construction and developed a new model in their lineup of voltage optimizing power supplies. Say hello to the Brownie.\u003c\/p\u003e\n\u003cp\u003eWhile the original BrownBox works great for stepping down the voltage from the wall, the new Brownie adds the ability to increase the voltage as well. This versatility makes it a great option for modern tube amps, when you're needing to increase or decrease the voltage depending on your power needs. Always great gear from AmpRx and we're happy to have a fresh batch of Brownies here in the shop.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eFrom AMPRX\u003c\/em\u003e:\u003c\/p\u003e\n\u003cp\u003eThe Brownie is a voltage optimizing power supply designed specifically for modern tube amplifiers, offering the ultimate solution for achieving consistent tone and protecting valuable equipment - the first of its kind. The Brownie is the first product in the AmpRx line to increase and decrease voltage. \u003c\/p\u003e\n\u003cp\u003eWHAT MAKES THE BROWNIE SPECIAL? \u003c\/p\u003e\n\u003cp\u003eModern Versatility: The first product in the AmpRx line to both decrease and increase voltage, compatible with all amplifier types from classic tube amps to modern designs. \u003c\/p\u003e\n\u003cp\u003eUnlock the Perfect Tone: Achieve consistency in tone and protect gear in any environment by dialing in the voltage you need every time you power your amp. Love your tone at 117V? You got it. \u003c\/p\u003e\n\u003cp\u003eSerious Protection: Mitigate disaster. Prevent unnecessary, expensive, and frustrating repairs. \u003c\/p\u003e\n\u003cp\u003eIndustry Recognition: AmpRx is trusted by amp techs around the world, top touring artists and their techs, and has been spotted on stages with artists like the Red Hot Chili Peppers, Paramore, Bonnie Raitt, Derek Trucks, Iron Maiden, Lynyrd Skynyrd and more. \u003c\/p\u003e\n\u003cp\u003eVoltage Adjustment Range:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDecreasing Increments: -1V (-7V Max Reduction)\u003c\/li\u003e\n\u003cli\u003eIncreasing Increments: +3V, +5V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTECHNICAL SPECIFICATIONS\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInput: 120V\/50-60Hz, standard IEC AC cable\u003c\/li\u003e\n\u003cli\u003eOutput: One (1) AC grounded outlet\u003c\/li\u003e\n\u003cli\u003eFuses: 2A and 4A options included \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMax Connected Load: 4A\/480W (when paired with 4A Fuse) \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: 2.8 lbs \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: 5(3\/4)\"L x 4\"W x 4(1\/8)”H \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eConstruction: Rugged metal enclosure; Powder coated in the USA \u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AmpRx","offers":[{"title":"Default Title","offer_id":46725803442395,"sku":"AMPRXBrwnie","price":299.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0202\/0250\/files\/Untitleddesign_26.jpg?v=1745436925"}],"url":"https:\/\/massstreetmusic.mom\/collections\/amprx-adjustable-ac-power-supplies.oembed","provider":"Mass Street Music","version":"1.0","type":"link"}