One of the biggest factors in the sound of acoustic guitar strings is the wrap wire. This wire is wrapped around a core wire to provide deeper and more sustained mid-range and bass tones for your acoustic guitar. While tone will vary slightly in each guitar, here are general characteristics of different wrap wire materials:
80/20 Bronze Acoustic Guitar Strings offer a bright tone. Players like this 80% Copper, 20% Zinc string due to its brilliant "true brass" tone out of the box, which breaks-in to a warmer sound.
Phosphor Bronze Acoustic Guitar Strings offer a bright, rich, and warm tone. Players like this 92% Copper, 8% Zinc composition due to its
consistent, slightly warmer tone (compared to 80/20 Bronze) out of the box.