D'Addario Guitar Tuner - NS Micro Soundhole Tuner - Fits in Guitar Sound Hole - For Acoustic Guitars, Ukuleles - Non Marring Sound Hole Clip - Quick & Accurate Tuning

The D'Addario PW-CT-15 tuner is barely noticeable on my guitar, so I leave it installed for immediate use any time. It works great, because it's easy to read from the player's position and is more accurate than a headstock tuner. My guitar sounds better than ever when I use this tuner. I'm glad I wasn't scared away by the negative reviews posted by some users. Here is my take on the issues they raised: (1) Guitars come in all shapes and sizes. This will fit most, but not all. Before buying the tuner, make sure that the clip will fit on the wood around your sound hole. For example, it might be too snug if you have an extra layer of reinforcing wood around the underside of your sound hole or a thick pick guard very close to the hole. A flat area up to 6/16" from the edge of the hole and up to 2/16" thick should be fine. Some reviewers reported that the clip was too loose for them, but the current model has a metal spring that should hold the tuner in place on thinner tops. (2) Guitars also have different bracing patterns. Make sure yours has room for the tuner between the hole and the bracing. You need space for the shape of a triangle with the corners cut off about 1-3/8" wide (accross the hole) and about 3/4" deep. For example, in the Taylor line, it fits my Grand Auditorium guitar with X bracing, but it might not fit in a GS Mini or anything with V-Class bracing. [UPDATE: I got a new guitar and can confirm that it works fine on a Taylor GA with V-Class bracing if you put it in the 7:00 position instead of 6:00. You can still reach the power button and see it fine.] (3) Press the metal release tab to take the battery out without breaking the plastic tabs that also hold it in place. The manufacturer's video shows this clearly. (4) Install and remove the tuner carefully to avoid breaking the clip. This is easy to do, as shown in the manufacturer's video. For me, this is a fabulous upgrade at a very reasonable price.

Great for live performances, the audience won’t see it, and it gets the job done.

First of all, these are the most accurate tuners I've ever owned. You CLEARLY know when you're in exact tune. Most inexpensive tuners go into the green in-tune mode well above and/or below the proper pitch. If you're thinking of one of these for a ukulele, be aware than even though this thing is small, it may not fit into some ukulele sound holes. If the body of the uke is made of thin material, when you press to turn the tuner on, it may rotate and drop down into the body. It clamps to the inside of the sound hole, and as with all spring clamps, the thicker the material being clamped, the better the clamp works. A thin plastic uke (and plastic ukes have come a long way, so I'm not cutting them here :-) will probably not hold the tuner properly. Also, if the sound hole is very small or oddly shaped, this really small tuner will not fit through the sound hole. It definitely did not fit a Mahalo smiley face uke :-) The tuner clips onto the edge of the sound hole where you can see the readout by looking down into the sound hole (with the instrument in playing position). You turn it on by pressing one side of the tuner (the other side allows you to change the tuning spec from A 440). It stays on for 10 minutes. I think that's too long and wish it would turn off after less than 5 minutes. Even though it's very small, the readout is easy to see. It fits Makala soprano ukes, the tuner is too large to fit directly at the bottom of the sound hole when in playing position. That's because of the small distance from the sound hole and the wall of the body. But it's still easily viewable. It also fits a Kala the same way. It should be no problem fitting larger body ukes (and of course guitars). I happy that I don't have to keep track of a clamp on tuner any longer :-)

I used the predecessor to this tuner on one of my classical guitars for a couple of years, and found it quite good. Easy to install, easy to use, accurate, unobtrusive, and with a good battery life. Unfortunately, after about 2 years the display began to fade, and replacing the battery didn't revive it. Still, I liked it enough to invest in this new model for a couple of my instruments. This new model is as accurate and easy to use as the older model. The original red/green display has been replaced with a full color display -- hopefully this new display will last longer than the old one did. the design is still simple, but installation has become a bit problematic. The older model remained where I had clamped it for 2 years without issue. For some reason the clip on the new design doesn't seem to want to hold the tuner in the guitar as well. About every 3rd time I turn it on or off, it comes loose and falls inside the guitar. I solved this problem by attaching some double-stick pads to the top of the tuner, that contact the inside of the top near the sound hole. I think if d'Addario put a couple of rubber pads on the surface of the tuner itself, in these same locations, the problem might be fixed, out-of-the-box. Regardless, it's a good tuner, at least worth 4-stars. If they improve the mounting clamp, it will be worth 5-stars.

ギターのホール部分にセットしてチューニングしますが、画面の液晶の文字が逆さまに見えて使いずらい。説明書も無いので調整できない。でも、正確にチューニングできる。見た目もカッコイイので２つ目です。

Das Gerät ist sehr praktisch und kann permanent montiert bleiben. Besser als die Clips für den Gitarenhals.

È molto piccolo, questo fa' si che, una volta nella buca, rimanga ben nascosto all'interno. La clip metallica per ora sembra ben realizzata ma è troppo presto per dare opinioni, infatti, la clip d'attacco alla chitarra, per questo tipo di accordatore, risulta spesso il punto debole. Il display è piccolino ma dalla lettura chiara ed intuitiva. Insomma vale quello che costa, funzionale, pratico, fa quel che promette senza fronzoli inutili.

Nice and discreet. It will make you look like as if you are tuning by ear. lol Quick and precise tuning. The only nitpick I can think of is, it's not so tightly clamped to your soundhole and you might accidentally flick it off while strumming hard.

I purchased this item with my own money and have not been provided with any incentives to provide this review. This is my favourite tuner, its sleek, accurate and easy to use. Hardest part is placing it inside the sound hole of the guitar. Good value for money, battery lasts well, is easy to see and use and allows you to look at the specific string and see where adjustments are required unlinke many other tuners that are either clipped onto headstocks or connected via amps etc. Makes a great gift for any acoustic guitar player or a great addition to your kit to replace an old tuner.