Tuning drums is a mystery to many drummers. We are therefore always looking for tools that can facilitate this. Most systems focus on drum head tension, but this little device effectively takes the pitch of the drum into account. In itself it is a very solid device. I do notice that it regularly has trouble finding the right pitch. For example, when I tune my snare drum, the device suddenly shoots from 185HZ to 300HZ, so I don't know what the correct pitch is. Even with the filter function, the device sometimes makes strange jumps. The device is slightly more reliable for toms and bass drums. I will continue to use the device for toms and bass drum, but I will continue to tune my snare by ear.