Heavier strings drive the guitar's top harder, which usually means more volume and a fuller bass, especially when strumming or flatpicking. The trade-off is feel: mediums press down harder and make bends tougher.
Lights are a good balance for most players. They have enough volume for strumming and are still comfortable for fingerstyle. That's why .012–.054 (P1254 Light) is our standard starting point. If your hands tire easily, Extra Light (.010–.048) or Pro Light (.011–.050) feel softer still.
Names like "Light" and "Medium" aren't standardized between brands, so always compare the actual gauges. In our lines, Light and Medium look like this:
- Phosphor Bronze: P1254 (.012–.054) and P1356 (.013–.056)
- Golden Bronze 80/20: GB1252 (.012–.052) and GB1356 (.013–.056)
- Royal Bronze: RL1254 (.012–.054) and RL1356 (.013–.056)
If you move from lights to mediums, check your guitar's action and neck relief. Some older or lightly built guitars aren't meant for heavier strings, so check the maker's recommendation if you're unsure.