DPA 4099 Core Guitar

I use this mic on acoustic and classical guitar. Sound is always subjective, but in my opinion this is a beautiful sounding mic.

It's adaptable fastening design is great for strumming, picking, percussive striking which are all possible with correct placement and the gooseneck holds it's position wherever I put it.
I position the mic around the 11th to 17th fret and at a height of 5cm-8cm depending on style and mood, but it comes with a caveat. My fingers sometimes have to "duck" under the mic if playing around that area of the fretboard but I consider it good practice not to lift fingers too high from the strings anyway!

The only two dubious points:
1) The clamp that holds the mic to the guitar body relies on a small plastic clip which feels like it could break if overexerted.
2)The lead from the mic to the XLR adaptor is also very thin. I understand the idea that you don't want a thick cable hanging off your guitar, impairing the weight and playing ability.

In both regards though, I have had this mic for over a year (Sept 2019) and treated with respect had no problems thus far.

I am very happy with my purchase.

I recently bought this mic for my classical guitar live performances. I usually perform with an amp and a looper in streets and venues, I hoped that with this mic I would have a better quality sound of my guitar because the di sound it's a bit weird to my ears. The sound quality is spectacular and I recently used this mic in the studio to record a new song of mine and I am very happy with the result, BUT. When I tried to rehearse with my live setup I found out that the mic isn't as directional as they market it, also the feedback was too much in most of the venues and stages. I think it's a very good mic to use as a Solo Concert mic and not for looping or very crowded and loud venues. Plus I still use it as a studio mic to record short videos for my Instagram and my compositions.

You can use piezo, transducers, built-in-mics - you'll never get the real sound of your instrument (steel string acoustic guitar). Use mic.
This mic is small, easy to use - no wonder it's used by many professional applications.

As it valid for any live situation with mic, it is recommended to have a sound engineer who cares about the feedbacks and helps in the soundcheck process.

My setups
Home recording: paired with an other mic, it gives a nice stereo sound - either it's mounted to the guitar or just placed beside the other mic.

Live, seated: mount to the instrument, plugged to the system.

Live, standing: oh, that's the best... it's an electret mic, so connect directly to the wireless sender on your belt, and you're free to move.