JAM Pedals RetroVibe Mk4 Univibe Mustang Switches: Effect on/off

Switches: Effect on/off

with the original Silvertone output and rectifier valves present and correct

The tone is very musical and balanced thanks to carefully matched parts in the circuit

As a half round phosphor bronze acoustic guitar set

the Premium Plus EQ system ensures that your guitar sounds its best in any setting

JAM Pedals RetroVibe Mk4 Univibe Mustang Switches: Effect on/offThe JAM Pedals RetroVibe Mk4 continues one of the most respected Uni Vibe style designs ever produced, preserving the lush pulse, vocal shimmer, and warmth that defined earlier versions while expanding its performance focused feature set. Fully analogue at its core, the Mk4 stays true to the character of the original Uni Vibe circuits, delivering deep, swirling modulation that feels alive and responsive under the fingers. Built with premium analogue