Exact tuning + Consistent tone <br />https://youtu.be/JcyyYyuExzg?t=12m52s <br /> <br />The Zero fret was invented by the great German Luthier Hauser around 1934 https://www.siccasguitars.de/shop/guitar/hermann-hauser-1934/ <br /> <br />21 features out of the box on AG Simplicio <br />https://youtu.be/LaZ4mcFKtVQ?t=2m <br /> <br />........... <br /> <br />Zero fret vs the obsolete bone saddle <br />https://youtu.be/UycPxN4Uvec
