Korg definitely know tuners. They have sold more tuners that any one else by far. If you are like some of us here at The Midi Store, you can't carry a tune in a bucket! But that doesn't mean your instruments should be out of tune also. We have rack mount tuners, clip on tuners, as well as ones that just sit on your music stand. We also carry Korg metronomes with tuners built in for extra convenience. Confused about which one is right for you? Give us a call at 928.284.1619. We're happy to help!