The Gamma Eros Clean Chorus is an analog chorus pedal from Acoustic Control Corporation, part of the company's GAMMA Series. RockBoard's PedalPedia describes it as a pedal that "allows you to add bold or gentle modulation to your guitar sound palette," spanning from a light thickening effect to a heavily modulated wash1.
What it does to your sound
The Eros is a "clean chorus," meaning it is built to sit under your existing tone rather than replace it. Acoustic Control Corporation describes two ends of its range. At low Depth settings, the maker says the pedal "adds subtle richness that's perfect for thickening up a solo or adding character and bounce" to rhythm guitar. Push the Depth or Speed higher and RockBoard's PedalPedia says the pedal transforms the tone "into a richly modulated wash of sound"1.
That range covers the two jobs players most often ask of a chorus: a quiet doubling that fattens a clean tone, and a pronounced, swirling modulation used as an effect in its own right.
Controls
| Control | What it does |
|---|---|
| Depth | Adjusts the intensity of the modulation, from subtle richness at low settings to a heavily modulated wash at high settings1 |
| Speed | Sets the rate of the modulation; high Speed settings, like high Depth, push the effect toward a richly modulated wash1 |
Power and hardware
The Eros runs on 9V DC with a center negative plug and draws 20mA, a light draw that fits easily alongside other pedals on a standard power supply. It can also run from a 9V battery, though RockBoard's PedalPedia notes that batteries and a DC power supply are not included with the pedal1.
The pedal ships without a battery or a DC power supply, so you will need to supply your own 9V battery or center negative adapter.
The pedal is built in what RockBoard's PedalPedia calls a "road-ready, classic, full-sized metal chassis with metal knobs," the standard full-size enclosure format that fits a conventional pedalboard1.
Videos
Acoustic Control Corporation
Guitar Center
Steve Sterlacci
Questions
Can the Gamma Eros Clean Chorus run on a battery?
Yes. Acoustic Control Corporation says the Eros operates from either a 9V battery or a 9V DC power supply, though batteries and a DC power supply are not included with the pedal. The battery option makes it usable without a power supply on a small board or in a gig bag setup.
How much current does the Gamma Eros Clean Chorus draw?
The Eros draws 20mA at 9V DC with a center negative plug, according to the maker's product page. That is a modest draw that most standard pedalboard power supplies can handle on a single outlet.
Is the Gamma Eros Clean Chorus analog or digital?
The Gamma Eros Clean Chorus is an analog pedal, according to the maker's product page, which lists its circuit type as analog.
What does the Depth knob do on the Gamma Eros?
Depth adjusts the intensity of the modulation. At low settings the maker says the Eros adds subtle richness that works for thickening up a solo or adding character and bounce to rhythm guitar, while high Depth or Speed settings turn the tone into a richly modulated wash of sound.
Who makes the Gamma Eros Clean Chorus?
The Gamma Eros Clean Chorus is made by Acoustic Control Corporation as part of its GAMMA Series of pedals.
Sources (1)
- Eros by Gamma, RockBoard PedalPedia, 2026