Ernie Ball Strings feature the following types of acoustic guitar strings.
Earthwood 80/20
Coated 80/20
Slinky Phosphor
Coated Phosphor
We tried out a set of the Ernie Ball Earthwood 80/20 medium light gauge strings.
Here’s what Ernie Ball has to say about these strings:
Made from 80% copper, 20% zinc wire wrapped around hex shaped tin plated steel core wire. The most popular acoustic guitar strings provide a crisp, ringing sound with pleasing overtones.
Here’s what we had to say about these strings:
Since we are usually more accustomed to a lighter gauge string, we immediately noticed a real difference in tone with these strings. These strings seem to have a warmer tone than most, but also are quite bright. We don’t think that’s a contracdiction, rather we think that it fairly represents how these strings have managed to deliver on both ends of the tone spectrum. And after all, isn’t that what most strings should strive to do?
Some have reported durability issues with these strings. This included premature breakage and loss of tone. However, the vast majority really like the tone, as we did. As far as durability, we had no problems. However, these strings are a lower priced string, and as such may not have the longevity of a more expensive coated string. If you like the tone, simply replace them as they break or lose tone. The price is sure right with these. They can be had for under 5 bucks on line.
Here is a video which gives you an idea of the tone with the Ernie Ball Earthwood strings. Not the best playing, but you get the idea of the tone.