This is a mono pad with a piezo sensor. Fairly sensitive to hits. Good dynamic response.
The build is very robust. The rubber is good but not on par with Roland, for example. It is still fairly silent, depending on the force applied. It is louder than Yamaha cymbals but way quieter than Millennium.
The look is what separates this model from the many others. Its unique look fills the visual role as well as the functional one in a drum set. The nuances of the characteristic shape are appreciated while playing.
Overall, very happy.