Current 33+ Acoustic Guitar Tuner. Chords, scales, drumbeats and a pro tuner. Select standard or alternate tunings or the essential guitar toolkit. This tuner is suitable for acoustic and for electric guitar. Get in tune with ultimate guitar's online free tuner. Acoustic Guitar Tuner - 5 Best Acoustic Guitar Tuners A Buyers Guide Guitar Adventures Electric guitars based on original fender designs feature six tuners in a row on the top side of the headstock.