A great little innovation here from the good people of Graphtech Guitar Labs. Each machine head in the set is specifically tuned to the core of the individual string allowing consistent tuning across all strings. Dave Dunwoodie explains the ins and outs in this video. Seems to me that those with a very creative mind and exceptional dexterity could make use of multiple tunings on the fly. At a minimum this makes tuning much faster and intuitive. What do you think about the Ratio Machines? Are they going to replace your stock tuners? Leave me a note below or send me an email.