The Ernie Ball Earthwood 80/20 Bronze acoustic strings, admired for their bright, balanced tone, were fast becoming the preferred choice for musicians across the globe. Offered in multiple gauge combinations, Earthwood strings were made available for six, twelve, acoustic bass, and other strings instruments, including the Banjo and Mandolin. Studio Phosphor Bronze acoustic sets joined the Ernie Ball acoustic family shortly thereafter. Depending on your guitar and tonal preference, you could choose between these two offerings to achieve your desired sound.