If you are serious about acoustic performance, it is vital to choose strings that suit your instrument, tone and playing style. When your acoustic strings start sounding flat, which makes coated guitar strings well worth the extra initial cost. Acoustic guitarists often play without the coloring of amps and pedals, so it is important to chosen guitar strings. The metal alloy used in the construction of an acoustic guitar string is fundamental to its tone. These strings have a distinctive tone, full of warmth and sparkle.