RC Classical Guitar String BassPaks come with an extra 4th string.
RC Strings Classical Guitar Strings
RC Strings Sonata Light SL20B Medium Tension Classical Guitar Strings, BassPak
A silverplated bass set with a strong fundamental and brilliant overtones. These strings settle into tune very quickly.
Set of 4 Sonata Light bass strings (2 D/4ths, 1 A/5th, 1 E/6th)
| Note | Gauge (in.) | Gauge (mm) | Material |
| D | 0.028 | 0.72 | silverplated wound |
| A | 0.033 | 0.85 | silverplated wound |
| E | 0.042 | 1.06 | silverplated wound |
