The UAFX Ruby '63 Top Boost Amplifier pedal replicates the iconic British valve amp sound used by legendary artists. Equipped with dual-engine processing and UAD modelling, it offers versatile tones from clean to overdrive with classic vibrato. Access studio-quality amp tones on-the-go, including famous mic/speaker pairings and boost effects. Customise settings and explore presets with the UAFX mobile app.