What sets it apart from a standard analog chorus is the dual-chorus circuit and full-stereo design. Rather than one modulation path split at the output, the pedal runs two chorus channels, and a Time control works them against each other across the stereo field. Premier Guitar, reviewing it in August 2021, found that "the dual-chorus circuit and stereo options enable weirder variations on those core sounds too, making the Supro a po"1.
The controls
The control set covers familiar chorus ground and then adds the stereo-specific features that define the pedal32.
| Control | What it does |
|---|---|
| Speed | Sets the modulation frequency3 |
| Depth | Sets the amount of modulation, the intensity23 |
| Time | Increases the chorus delay time in one channel while decreasing it in the other, enhancing the differentiation in the stereo spread with two amps23 |
| Dimension | Variably intermingles the left and right signal paths for further depth effects3 |
| Vibrato switch | Takes the clean signal out of the output, inducing a warbling, vibrato-like signal3 |
Speed and Depth handle the usual chorus parameters of modulation frequency and intensity3. Time is the stereo control: because the dual-chorus circuit runs two delay paths, turning it up lengthens the delay on one side of the stereo field while shortening the delay on the other, which Hunter found "dramatically enhanc[es] the differentiation in the stereo spread when used with two amps"3.
The Dimension knob cross-mixes the left and right signal paths, which Hunter described as producing "further depth-defying aural stunts"3. Supro's own description of the Vibrato mode explains how the two interact: the switch removes the clean pass-through signal for pure pitch modulation, and with the Dimension knob engaged it introduces "a more complex, double vibrato effect"2. Supro also publishes a set of suggested settings on its product page under the names New Dimension, Castaway, Goin' Wide, Big Quiver and Rotary2.
Power and connections
The pedal runs on 9VDC through a center-negative adapter input, with a current draw of 250mA23. There is no internal battery3.
At 250mA, the Supro Chorus draws far more current than most analog pedals, closer to a digital pedal's appetite. Check that your power supply's 9V output is rated for it before plugging in, and be careful with low-current daisy-chain outputs.
Connections are on the front face of the enclosure: four quarter-inch jacks for stereo input and output3. A mono signal can go in and be split into stereo, so a single-amp player can feed one input and use both outputs, or simply run mono in and mono out3. Supro's product page lists no expression input2. On the spec sheet, input impedance is 2.2M and output impedance is 150 ohms2.
One point of disagreement between sources: Supro's product page lists the bypass as buffered2, while GuitarPlayer's review lists "True-bypass switching, LED indicator" among its extras3. The two sources conflict, and there is no resolution between them, so treat the bypass type as uncertain.
What reviewers said
GuitarPlayer's Dave Hunter reviewed it in 2026 and summed it up:
"Awesome in mono, even better in stereo, this analog chorus can cover the classic chorus and vibrato tones, while also"3
The Supro Chorus is an analog pedal with a list price of $2492. Its Vibrato switch removes the clean pass-through signal, allowing for pure pitch modulation with the Dimension knob, which introduces a more complex, double vibrato effect2.
Where it came from and what sits beside it
Supro positions the Chorus within a small family of analog stereo modulation pedals. The Supro Flanger is described on Supro's own site as a sibling to the Chorus4, an all-analog, full-stereo flanger that shares the Dimension concept in switch form. For players comparing types, the Chorus's Vibrato switch also covers ground that a dedicated vibrato pedal would, by removing the clean signal and leaving only pitch modulation23.
Questions
Is the Supro Chorus true bypass?
Supro's own product page lists the bypass as buffered, while GuitarPlayer's review describes true-bypass switching with an LED indicator. The two sources disagree, so players who care about bypass type may want to verify with the pedal in hand. Either way the pedal passes signal when switched off.
Does the Supro Chorus take a battery?
No. There is no internal battery. The pedal runs from a center-negative 9-volt DC adapter input, drawing 250mA, which is well beyond what a 9V battery could supply for long anyway. Plan on a proper power supply, and note that 250mA is too much for some small daisy-chain outputs.
Can the Supro Chorus be used in mono?
Yes. The four quarter-inch jacks handle stereo input and output, but you can also feed a mono signal in and split it into stereo, or simply run mono in and mono out. GuitarPlayer's reviewer found it awesome in mono and even better in stereo.
What chips are in the Supro Chorus?
A pair of genuine MN3007 bucket-brigade IC chips, the same type of delay chip used in the seminal vintage chorus pedals of the late 1970s. Supro says the two chips are what let the pedal deliver a thick analog chorus, and the dual-chorus circuit is what makes the stereo behavior possible.
How much current does the Supro Chorus draw?
250mA at 9VDC, according to Supro's product page. That is a substantial draw for an analog pedal, closer to what digital pedals pull, so check that your power supply has a 9V output rated for at least that much current.
Sources (4)
- Premier Guitar Reviews the Supro Chorus, Supro USA, 2021-08-08
- Chorus - Supro USA, Supro USA, 2024-10-14
- Supro Chorus Review, GuitarPlayer, 2021-06-15
- Flanger - Supro USA, Supro USA, 2024-10-14
