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...

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...