$299
The 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. While the original BrownBox works...
$299
The Brownie by AmpRx is the latest innovation in voltage optimization, providing musicians with unparalleled control, flexibility, and protection for their gear. Hand-wired in Nashville, Tennessee, the Brownie is...
$379
The BrownBox from AmpRX 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...
$379
From AmpRX: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. our products can also be...