The newly upgraded sound source chip is used to deeply restore the piano sound quality. The dual-speaker noise reduction circuit design creates stereo surround with accurate scale and good tone.Comes with the original power adapter, with dual power mode, can be plugged in, or also supports 4 AA batteries (not provided) for power supply. “A music partner you can take with you.Connect USB to simulate the sound of multiple musical instruments. External speaker, with microphone can sing. and you can have the shocking experience of a professional concert at home.