JAM Pedals RetroVibe MK4 Preamp and playability of the AZ

and playability of the AZ series to beginner and intermediate players

High-performance components round out the feature list and include a fully adjustable bridge with stop tailpiece (ST) for rock-solid string feel

and exquisite interaction with your pickups and effects

Powered by a regular 9~18 V DC PSU or PP3 9V Battery

JAM Pedals RetroVibe MK4 Preamp and playability of the AZThe RetroVibe has long stood among the most revered Uni Vibe interpretations ever made, celebrated for its lush pulse, vocal shimmer, and unmistakable warmth. The mk. 4 continues that legacy. Its ground up all analog redesign preserves the soul of the original while expanding its expressive range. A wider Depth and Speed span, plus new Tap Tempo and Ramping functions, invite deeper interaction and performance freedom. Switch between Chorus and Vibrato