JAM Pedals Retrovibe mk.4

The Retrovibe mk.4: A Modern Classic in Analog Modulation

Legendary Uni-Vibe Tone Reimagined

The RetroVibe mk.4 carries forward the celebrated lineage of one of the most revered Uni-Vibe-style pedals in existence. Known for its lush modulation, vocal shimmer, and unmistakable analog warmth, this updated edition preserves that classic soul while expanding its creative reach. Whether you're chasing slow, liquid pulses or quick rotary spins, the mk.4 delivers iconic swirling textures that stay deeply musical and unmistakably vintage.

Expressive Performance Features

Equipped with a broader Depth and Speed range than its predecessors, the mk.4 adds serious versatility to your board. The addition of Tap Tempo and Ramping functionality allows you to adapt modulation rates dynamically during a performance. A long press on the TAP footswitch initiates a speed ramp to a user-defined tempo, letting your vibe flow between settings with seamless grace. These new tools open up immersive, evolving soundscapes without sacrificing the pedal’s analog character.

Chorus and Vibrato Modes

With a simple flick of a toggle switch, you can shift between Chorus and Vibrato voicings. The Chorus mode brings out the classic chewy throb of a vintage Uni-Vibe, while Vibrato mode delivers pitch-modulated movement that can be subtle or wild depending on how you set it. Each voice is rich with movement and feels alive under your fingers.

Real-Time Control with Expression Pedal

The Retrovibe mk.4 allows for hands-free control by accepting a standard passive 10k expression pedal via TRS jack. This lets you manipulate the Speed on the fly, making your modulation feel more like an instrument in itself. For even greater control, external tap tempo can also be connected via the dedicated TS input.

Intuitive Interface, Endless Possibilities

While its controls are simple and clearly laid out, the Retrovibe mk.4 encourages experimentation. From subtle movement to deep psychedelic warbles, it’s built to inspire. Internal trimmer access also lets you tailor the output level to perfectly match your rig.

Specifications

• DEPTH: Sets modulation sweep intensity

• SPEED: Adjusts modulation rate

• Toggle switch: Selects Chorus (C) or Vibrato (V) mode

• TAP: Tap Tempo and Ramping activation

• Internal trimmer: Controls maximum output level

• TRS input: Accepts standard passive 10k expression pedal for Speed

• TS input: Accepts external tap tempo footswitch

• Accessories included: Box, Manual

• Power supply: Not included

This effects pedal ships fully insured with signature required.