US
Ernie Ball

Ernie Ball Earthwood Bell Bronze Medium Light Acoustic Strings

  • Medium Light 12-54 gauge
  • Bell Bronze alloy
  • John Mayer collaboration
  • Rich, full, big, bold sound
  • 0.04 kg

Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A medium light acoustic set in a proprietary bell bronze alloy made with John Mayer, for a full, forceful voice. The listing gives no pack count or coating detail.

As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.

ASIN: B0DSLVH6YXCategory: Acoustic Guitar Strings

Colors Available

Extra Light (10-50)Light (11-52)Medium Light (12-54)Medium (13-56)

Need a different one? Pick on Amazon →

Overview

Not a standard bronze set, Ernie Ball's Earthwood Bell Bronze draws on alloys used traditionally for bells and cymbals. John Mayer helped develop these strings to a demanding standard as a new voice for an acoustic guitar.

The alloy is described as giving a richer, fuller sound, with a sound profile of rich, full, big and bold. A medium light gauge suits players who want volume without the heaviest feel. The limitation is a listing that omits pack count, coating and core details.

Who it's for

Acoustic players who like a full, rich voice and the John Mayer connection. Those who want a coated set, or a lighter feel for easy bending, should look at other strings.

Pros and cons

Pros
  • Proprietary bell bronze alloy
  • Developed with John Mayer
  • Rich, full, bold sound
  • Medium light gauge
Cons
  • Pack count not listed
  • Coating not described

Performance notes

Bell bronze is the alloy behind the full, bold tone, drawing on materials used in bells and cymbals. The medium light gauge balances volume against fretting effort. Core wire and winding details are not supplied.

Specifications

BrandErnie Ball
Dimensions & fit
Item weight0.04 kg
Construction & materials
String Material TypeBell Bronze
Other details
String GaugeMedium Light (12-54)
InstrumentAcoustic guitar
Set NameErnie Ball Earthwood Bell Bronze
Sound ProfileRich, full, big, bold

Frequently asked questions

Who developed the Ernie Ball Earthwood Bell Bronze strings?

Ernie Ball developed them in collaboration with John Mayer.

Are the Ernie Ball Earthwood Bell Bronze strings coated?

The listing does not describe a coating.