Ok i was looking at those N-tuners and they sound pretty cool and I would have liked to get one except they don't support hollowbodies. Thats going to be a problem because I am going to buy a hollowbody, and the rest of my guitars don't have knobs (acoustic). I checked the site and although its possible, it would be extremely hard and would require removing the pickups and mounting it through the pickup holes and the lower f-hole. Do any of you hollowbody people have any other advice on what to do besides buying a differrent guitar? (and don't say velcro a regular tuner to the back, I already scrapped that idea) Maybe someone knows of a similar product?