Addison, TX, United States
About this listing
JAM Pedals RetroVibe Mk.4
The JAM Pedals RetroVibe Mk.4 carries forward the legacy of one of the most respected Uni-Vibe–style pedals ever made. Known for its lush pulse, vocal shimmer, and unmistakable warmth, the RetroVibe has long been a favorite among players chasing authentic, organic modulation.
The Mk.4 remains fully analog at its core, preserving the soul of the original circuit while expanding its expressive potential. With a wider range of Speed and Depth, plus the addition of Tap Tempo, ramping functionality, and expression pedal control, the RetroVibe Mk.4 offers deeper interaction and enhanced performance flexibility—without sacrificing its signature feel.
Switch between Chorus and Vibrato modes to explore everything from slow, liquid modulation to fast, swirling, rotary-style textures that stay musical and alive at every setting.
Key Features
All-analog Uni-Vibe–style modulation circuit
Expanded Speed and Depth ranges for greater versatility
Chorus and Vibrato modes
Tap Tempo with ramping functionality
Expression pedal input for real-time Speed control
Internal output level trimmer
Handcrafted quality and unmistakable JAM Pedals character
Controls & Functions
Front Panel Controls
Depth – Sets the intensity of the modulation sweep
Speed – Sets the modulation rate
Toggle Switch – Selects Chorus (C) or Vibrato (V) mode
TAP Footswitch – Tap in modulation speed or engage ramping
Internal Control
Internal Trimmer – Adjusts the maximum output level of the effect
Tap Tempo & Ramping
Tap Tempo: Tap the TAP footswitch to set modulation speed
Ramping:
Press and hold the TAP footswitch to ramp from the current speed to a fixed, user-defined speed
Setting the Fixed Speed
Hold the TAP footswitch and adjust the Speed knob to the desired target speed
Release the TAP footswitch, then return the Speed knob to its original position
Setting the Ramping Time
Hold the TAP footswitch and adjust the Depth knob to set how long the ramp takes
Release the TAP footswitch, then return the Depth knob to its original position
Expression & External Control
TRS Jack: Speed expression pedal input (standard passive 10k expression pedal)
TS Jack: External tap tempo footswitch
Price$469
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