Very good sound quality, for my folk it's great! A small downside: the jack cable attached to the microphone, the need to turn up the volumes because this microphone is not active, and the fact that it fits more or less well depending on the diameters of the sound holes. Generally, it works for everyone but it depends on the shapes, and on one of my guitars, perfect, but on the other (auditorium), the sound hole being narrower, it fits but with a bit of force and I fear that the pressure caused might have repercussions on the top over time. Maybe I'm wrong (I hope), I don't know but just in case... Apart from that, good price for a good sound and without battery (the only advantage of passive because the gain in return is therefore lower than an active one while remaining usable)!