An accurate replica of the 1976 BOSS CE-1!
The One Chorus is an accurate replica of the 1976 BOSS CE-1, a circuit that left its mark music history.
Players such as John Frusciante, Brian May, Eric Clapton and Steve Morse used this iconic effect.
The One Chorus works and sounds identically to the original CE-1, giving you the same lush modulation and rich preamp crunch.
Plus, true bypass switching, low-noise BBDs (spec’d after the MN3002 chip) and 9V DC power make it pedalboard-friendly.
The One Chorus recreates the magic of the original CE-1 in a more reliable and compact package, and with less noise!
Grobert Effects The One Chorus pedal features:
• A faithful replica of the legendary 1976 BOSS CE-1.
• Experience the CE-1 in a more compact package.
• Lower noise and more reliability than the original.
• True Bypass.
• Power: 9V DC.
• Current Draw: 350mA.
• Dimensions: 4.65" X 7.36" X 1.49".
Specs
| Type | Chorus |
| Condition | New |
| Power | 9V DC |
| Current Draw | 350mA |
| Power supply included | No |
| Manufacturer Warranty | Lifetime |
| Country of Origin | Poland |
FREE SHIPPING
- Free shipping within Canada.
- Free shipping to the USA.
- Free shipping on international orders over 520$.
Visit the Shipping page for more.
Fast Delivery
- Canada : 1 - 2 business days
- USA : 1 - 2 business days
- Rest of the world: 3 - 5 business days.
Hassle-Free Returns
You have 45 days to test your new gear. If you choose to return it, we’ll send a full refund. It’s that simple: no bogus restocking fees or charges.
Visit the Returns page for more.
Frequently Asked Questions
-
How can I tell if an item is in stock? +
Each product page shows an availability status.
• In stock items are ready to ship.
• Out of stock items are currently unavailable.
You can enter your email to be notified when an item is back in stock.
-
Where are you located? +
We’re based in Blainville, Quebec, Canada.
-
When will my order ship? +
Orders placed before 12 PM EST ship the same business day.
Tracking details are sent shortly after purchase.
-
How much does shipping cost? +
Most orders ship free to Canada and the US.
International orders ship free on purchases over $520 CAD.
-
Which shipping methods do you use? +
Orders ship via UPS Expedited by default.
For faster delivery, you can select UPS Express Saver at checkout.
-
How long does shipping take? +
Typical delivery times are:
• Canada: 2–3 business days with UPS Expedited, 1 business day with UPS Express Saver
• USA: 2–3 business days with UPS Expedited, 1 business day with UPS Express Saver
• International: 3–5 business days with UPS Expedited, 2–3 business days with UPS Express Saver
-
Which payment methods do you accept? +
We accept all major credit cards and PayPal.
Financing options are available through Klarna and RBC PayPlan.
-
Do Canadian customers pay sales tax? +
Yes. Sales tax is applied based on your province of residence:
• Alberta: 5%
• British Columbia: 5%
• Manitoba: 5%
• New Brunswick: 15%
• Newfoundland and Labrador: 15%
• Northwest Territories: 5%
• Nova Scotia: 14%
• Nunavut: 5%
• Ontario: 13%
• Prince Edward Island: 15%
• Quebec: 14.975%
• Saskatchewan: 5%
• Yukon: 5%
-
Do USA customers pay import fees? +
Yes. Starting August 29, 2025, all US-bound shipments will be subject to duties, taxes, and brokerage fees.
These charges are determined by US Customs and collected by UPS at delivery.
-
Do international customers pay import fees? +
Yes. International shipments may be subject to duties and taxes.
These charges are set by the destination country’s customs authority and collected by UPS at delivery.