The Clip is the world's first polyphonic headstock tuner. Based on the PolyTune pedal tuners the Clip is little longer than a nine-volt block battery, about half the thickness, and is attached to a stainless steel clip with rubber pads designed to protect the headstock you clip it to. Since I already use TC Electronic's famed PolyTune polyphonic pedal tuner, which features an intuitive display to let you see all six-strings simultaneously and quickly tune the ones that are sharp or flat, I knew it was only a matter of time before TC would incorporate that technology into a clip-on tuner. PolyTune™ remembers the last used settings, even if the power has been disconnected or the battery has been removed. Changing battery- Unscrew the thumb-screw on the back of the pedal and detach the backplate. Unmount the old battery and attach the new battery to the battery clip making sure the polarity is correct. Then remount the backplate. Buy your TC Electronic PolyTune 3 Polyphonic Tuner from Sam Ash and receive the guaranteed lowest price. Enjoy our 45-day return policy. Call 800-472-6274 for expert advice. Accuracy, sensitivity, durability, display, clip mechanism, footprint and aesthetics are all considerations. The Polytune clip looks to me to be better than anything else currently on the market. I'm wondering two things at this point. 1) Does it clip onto a PRS headstock and stay put. Those headstocks don't have much room for clip-on tuners. Yes, the rubber on my Polytune Clip made just a small, slight mark in the nitro finish on the back of my custom shop ES335's headstock. I won't be leaving it on that guitar for long from now on. TC needs to issue a warning about the Polytune Clip and nitro finishes and change the material where it touches the guitar. Need help: E flat tunning with polytune clip. I cannot make any sense of the instructions for tuning all strings down a half-step (Eb) with the polytune clip. I press button 2 twice to select Eb and then start to tune my 6th string E and all the other strings. And it just tunes everything to standard tuning. TC Electronic PolyTune Clip Tuner It's no secret that clip-on tuners now equate to the most popular devices in the tuner market today. However most of them fall quite short in a number of areas -- from usability, accuracy and no less desirability. See who uses TC Electronic PolyTune Clip, including Kevin Parker, Steve Vai, Paul Gilbert and 13 others. TC Electronic PolyTune Clip reviews & prices. Check out the TC Electronic PolyTune Clip, as used by Kevin Parker, Steve Vai, Paul Gilbert, Stephen Carpenter, Andy Summers, Steve Morse on Equipboard. TC Electronic recently released the Polytune 3, which is an updated version of their world-first polyphonic tuner for guitar.The pedal is designed to free you from the tedious one-note tuning we're all familiar with, and has a raft of other advanced features. The clip works fine and the display is very bright. All in all the Polytune clip on is not exactly what I expected from it. Of course this is mainly due to the way I want to use it (not just tuning). The clip works fine and the display is very bright. All in all the Polytune clip on is not exactly what I expected from it. Of course this is mainly due to the way I want to use it (not just tuning). Strum, Tune, Rock Experience the next generation of Polyphonic tuning. TC Electronic's obsession with building the ultimate polyphonic tuner into a clip-on model is abundantly clear in the