It's been eight years I use this mic for my classical guitar and I am Fully satisfied.
<ul> It fits anywhere (any guitar with the bridge saddle is removable, or other instruments of its kind, even mandolin or dulcimer!)
It is not too expensive (less than 100 Euros 8 years ago).
It has a button / slecteur volume.
Comes with a small clip to attach the cable (soon to snatch the microphone in an accident.)
<ul> Fragile !!!!! </ul>
In short, an excellent microphone to the sound perfectly neutral and you will make use, as long as you take care.
I installed it on my small piezo acoustic guitar Esteve GR03 a few years ago. I always used my amp electric (Line6 Flextone 3) without much conviction. The sound was nice but not very clean, and went very quickly in feedback. In short, my amp was not hyper-exploitable, until ...
I have made available for an open stage at the farm of Biéreau, a beautiful room in Belgium, where she was directly plugged into a DI and into the console. I was stunned! The sound was beautiful, deep, rich, dynamic. Although conditions were favorable, but I was suddenly proud of my old guitar!