Wow... ...simply wow! The round german steel core with it‘s 99.2% pure nickel wire in the handpolished studio version- handmade in germany the traditional way: Less til none string noise superb intonation since there are no defects in the wire And that sweet mellow vintage tone! Those strings are loud and mighty with an incredible long sustain, wonderful overtones and clarity. Mighty basses and silky heights. I‘m blown away! The handpolishing generates a more rough surface, the opposite what I‘ve expected. After you get used to it it‘s a dream to play. The perfect intonation is a pleasure to hear and the nearly complete reduced string noise make all the tiny dynamic notes hearable. Simply wonderful. I‘ve never got such a detailled guitar tone before.