Product Overview
Features:
- Medium 13–56 gauges deliver strong volume, punchy lows, and solid rhythm projection.
- Flexible thin wire core improves bendability and sustain compared to standard medium sets.
- Phosphor bronze roundwound on hex core provides warm, clear, and balanced acoustic tone.
Description:
Martin MA550FX Flexible Core phosphor bronze strings give players the power of a medium 13–56 set with a more forgiving feel. The advanced thin wire core makes these strings easier to fret and bend than typical mediums, while still offering bold projection and a confident low end.
Built on a hex core with phosphor bronze roundwound wire, they provide a warm, articulate voice suited to flatpicking, heavy strumming, and dynamic fingerstyle. If you like the fullness of medium strings but want extra flexibility and comfort, this set is a strong match for many steel‑string acoustic guitars.
