It’s probably the beat piezo in it’s class, and easy to fit. This is the same as the piezo in the Infinity Matrix, and I have it installed on a 2005 Martin D15.
Sound quality is very good. I run it into an optical compressor and a six band EQ into a Loudbox Mini, and I’m satisfied with the setup.
However, they seem to have an issue where they fail after a number of years. My original lasted about 8 years until it began making loud, horrible noises. I replaced it with this, and four years later, it has begun to do the same, albeit intermittently.
I don’t know if I will replace it a second time, or try an alternative.