I am not at all musically inclined, but I sent this as a gift to a guitar virtuoso relative who was kind enough to provide his initial impressions. His comments follow;From the packaging it’s immediately evident that the Kliq Ubertuner All Instrument Clip-on Tuner is a superior version of the ubiquitous clip-on tuners you see on so many instruments at so many gigs.This is a very refined technical version of the concept of a Piezo sensor-based tuning technology. In essence, the tuner does not “hear” the note it is asked to legitimize, it “feels” it through the vibration generated by the string and transmitted through the guitar body up through the neck. The KLIQ specifies its Tuning Precision as +/- 1%. In practical terms, you achieve a perfectly-tuned guitar by following the simple directions, keeping in mind that the nuance of bringing a string “up to” pitch from a flat rather than “down” from a sharp is a rule that predates any kind of tuning technology.The KLIQ sets up in two or three minutes.The battery compartment snaps open, the included 2032 "button" battery is inserted PLUS side up, and battery drawer is snapped back into the body. An easy-to-find Power On/Off button wakes up the sensor, and away you go. As a guitar player, I set the Tuning Mode to “G” (Guitar) and I hit the low E (6th) string. It’s sharp as the red bars tell me. I tune down past where the E should be, and slowly twist the tuning knob (the one that tightens the string) until the yellow indicator lights go to the top of the readout, and the center circle turns solid green. The readout in the center of the screen confirms that I am working on the E6 string.I follow the procedure for the remaining five strings, being sure to tune “up" each time. When I overdo it, and the red sharp indicators flash on, I make sure to turn back down past the note I’m trying to nail, and then slowly creep up to it. If you ever get the sense that the tuner isn’t “working,” it may be because you tune down to a note, which always leaves a little bit of slack in the string, which then causes it to drift out of tune pretty quickly.You may also have some looseness in your tuning pegs, or slop in the way the string is wound around the peg. Bridge pins have to be solidly in place, too. If your E6 string registers perfect pitch, and you're out of tune as you play notes going up the neck, you may have set-up issues like overly high action which requires too much stretch when you play a note, which of course, changes (sharps) the pitch.If everything else on the instrument (I can only talk about guitars) is where it should be, the KLIQ Ubertuner can be relied on to do its job precisely. It is user-friendly. You can swivel it to keep the screen in virtually any position you prefer. You can tune, shut off the power to save the battery, and start the KLIQ up again with the touch of a button. Other features include a choice of tuning modes… Chromatic, Guitar, Bass, Violin, and Ukulele. There are calibration possibilities, and transposition settings.The unit weighs 1.4 Ounces, so there’s no risk of neck strain if you leave the tuner clipped to the headstock. It is a professional, all-black little gem that I affix to vintage guitars with no fear of damage. All in all, this is the pick of the litter, and a slick way to improve your sound and get things back to where they should be quickly and smoothly after a lot of string bending or vigorous playing. A lot of students give up because their playing never gets beyond that beginners’ sound. In my experience, it’s a tuning issue 9 out of 10 times. The KLIQ may mean the difference between giving up, and going on to play Carnegie Hall.