This is a sensor unit that combines an XY stereo condenser microphone and a trigger unit that converts drum vibrations into electrical signals, allowing for easy installation. It's a powerful item that expands the possibilities for practicing, recording, and performing with acoustic drum kits. The nameplate on the back has peeled off, but this does not affect its actual use. ■ Contents Main unit, sensor unit, power adapter (PA-150B), connection cable (1 set) #2510