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.

Works great and is more accurate than a headstock tuners

Extremely low profile tuner is an absolute must have. Perfectly located in line of sight and visible through strings. Its always there and isn't the eye sore that clip ons are. I have one on my Taylor and its absolutely amazing. Doesn't affect the tone of the guitar at all and it is secure so I'm not worried that it will fall off (or in). Bright enough to be seen in any light, super accurate and easy to use. Just turn it on and let it do it's thing and for a great price. Get yours before they get smart and start charging more for these. Seriously, anyone with an acoustic guitar with a sound hole needs one of these. Period!

The tuner works fine and provides the option to change the tuning frequency/pitch. Tuning is very easy and straightforward. I keep it in my guitar sound hole and is small enough to not affect playability and is not noticeable. The reason I deducted one star is because mine stopped working after just over a year so its durability is suspect.

Inconspicuous and awesome. My acoustic guitar doesn’t include electronics so I needed a separate tuner. This sits inside the sound hole and can stay there without looking clumsy or getting knocked off. It has a full color readout and works great! I’ve even bought them for friends and family and we all agree that they are great!

If you haven't used one of these before, it's a great little device for tuning your guitar or other stringed instrument. This model fits inside the sound hole of your guitar and is easy to see. The built-in tuner on my guitars are in a place where it's not always the easiest to see. This has solved the problem.

I played guitar for many years and had numerous different types of tuners, but this one really impresses me! It’s completely out of the way but very easy to see because it light up brightly in color, and it is very accessible : you’re looking right down at the sound hole to use it. I’m going to replace other tuners. I have with this one. I especially like the fact that if I am playing my guitar outside and competing with the sun to see the screen, this eliminates that issue!

This tuner is a great idea. It is an accurate tuner. But for me it is insufficiently bright and very difficult for me to read with confidence, even when I wear glasses. If it was bright enough to see the display well it would be a 5 star product.