Gauges: 10-14-23-30-39-47.Made by the worlds largest string manufacturer, these acoustic guitar strings feature the brightness and long life of genuine phosphor bronze alloy. DAddario is the worlds largest manufacturer of strings for musical instruments. Many top guitarists wont play any other brand. Regardless of your playing style, DAddario has a set thats right for you.. Gauges: 10-14-23-30-39-47. Made by the worlds largest string manufacturer, these acoustic guitar strings feature the brightness and long life of genuine phosphor bronze alloy. DAddario is the worlds largest manufacturer of strings for musical instruments. Many top guitarists wont play any other brand. Regardless of your playing style, DAddario has a set thats right for you.