The Dunlop UV1SC Uni-Vibe Stereo Chorus is an analog stereo chorus pedal built around the Uni-Vibe name. Dunlop describes it as inspired by the original classic Uni-Vibe, and says it "produces all the air, phasey rotating-speaker sound in two dimensions within a small, rugged package." Its distinguishing feature against a standard chorus is the stereo output section: left and right outputs whose mix you can vary from a spatially wide spread to classic mono.1
Stereo outputs and the left/right mix
The UV1SC's stereo section is what sets it apart from a mono chorus. Dunlop says the pedal "gives you the control to vary the mix of left and right outputs from spatially wide to classic mono," so the same pedal covers both a wide two-amp spread and a single-amp setup. On the stereo image itself, Dunlop's claim is direct: "The stereo image this pedal achieves is worthy of the name Uni-Vibe!"1
For a player, that means the pedal can sit at the end of a board feeding two amps, with the phasey, rotating-speaker motion spread across the room, or be dialed toward mono when only one amp is in play. It sits in Dunlop's wider Uni-Vibe family alongside pedals like the Dunlop JD4S Rotovibe Chorus Vibrato and the Dunlop Authentic Hendrix '69 Uni-Vibe, and among chorus designs it relates to Dunlop's own M134 Stereo Chorus.1
The Uni-Vibe background
The UV1SC draws on the Uni-Vibe design, and RockBoard (rockboard.de) describes the effect as housed "within a small, rugged package."1
If you are comparing vibe-style pedals, the chorus pedal type page gathers the wider field, and Dunlop's Hendrix-linked Shrine Series Uni-Vibe Chorus/Vibrato is the compact alternative in the same family.1
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Questions
Is the Dunlop UV1SC analog or digital?
The UV1SC Uni-Vibe Stereo Chorus is an analog pedal. Dunlop lists its circuit type as analog, which places it with the bucket-brigade style designs players associate with the Uni-Vibe name rather than with digital modeling units.
What power supply does the UV1SC need?
The UV1SC runs on 9V DC, center negative, the same standard used by most modern pedals. That means a regular pedalboard power supply output or a one-spot style adapter will run it, and it shares the common polarity convention of center-negative effects.
Can the UV1SC be used in mono?
Yes. Dunlop says the pedal gives you control to vary the mix of the left and right outputs from spatially wide to classic mono, so a player running a single amp can dial the effect back to a mono image instead of the full stereo spread.
Is the UV1SC based on the original Uni-Vibe circuit?
Dunlop describes the Uni-Vibe Stereo Chorus as inspired by the original classic Uni-Vibe. It is not a claim of an exact parts-for-parts recreation, but an analog design that draws on the original circuit's phasey, rotating-speaker character.
Does the UV1SC have true stereo outputs?
The UV1SC has stereo outputs, with left and right outputs forming a stereo image that Dunlop calls worthy of the Uni-Vibe name. The mix between the two outputs is variable, running from a spatially wide spread to classic mono.
Sources (1)
- UV1SC Uni-Vibe Stereo Chorus by Dunlop, RockBoard (rockboard.de), 2026
