The products is adopted with the patent of non-contact sensor system which is fixed on bottom of drum, instead of installed next to the head of drum. This system provides high speed, equalized sound and more accurate response. Besides, with the unique mesh head construction, the elasticity of mesh head is close to real drum head and the dynamic range is large. The mesh head tightness can be adjusted according to different requests. The drum sounds are highly close to acoustic drums.
Grand also developed Drumhelper APP. The Drum score can be generated on a PAD when you play drum via wireless connection to module with blue tooth.