Universal Audio UAFX Ruby 63 Top Boost Amplifier - guitar effect

The Universal Audio UAFX Ruby 63 Top Boost Amplifier delivers the legendary sound of a 1960s British tube amp in a compact stompbox. Powered by UA's dual-engine processor, it captures the dynamic response and harmonic richness of the original, from clean chime to overdriven grind. Three distinct voicings—Normal, Brilliant, and Top Boost—provide versatile tonal options for any playing style.

Built-in Boost, Reverb, and Tremolo effects add depth and texture without extra pedals. True stereo operation allows for immersive spatial effects, while USB-C connectivity enables firmware updates and preset management via the UAFX Control app. The rugged red enclosure is stage-ready, making it a reliable tool for guitarists seeking authentic vintage tone in a modern format.