Current 23++ Guitar D String Acoustic. The definitive guide to guitar strings for acoustic/electric guitar. As guitar players, we all know the importance of a good set of strings… light strings on an electric guitar will have smaller gauges than light strings on an acoustic guitar. Like the classical guitar, it is often referred to simply as an acoustic guitar. Silk and steel strings are popular among folk guitarist and finger picking players due to their softer touch and delicate tone.