What is the difference between “roundwound” and “flatwound” strings?
The roundwound strings are composed of a core involved in a round-section wire, whilst on flatwound strings such wire has the core wrapped up by a square-section wire. The difference between both is more perceptible in the sound, having a roundwound string a brighter sound with more sustain, and being the sound of a flatwound string sultrier and closer to the sound of an acoustic bass string.
