Prospects: a comprehensive and conventional cabinet design Master volume control, or volume control Keyboard: 88 keys with dynamic hammer action (graded hammer action is an optional option). Display: A blue LED screen, indeed 92 polyphony Sound level: 300 Rhythm: 100 Demo: 58 Transpose: Indeed, Level between -12 and +12 Tune: Level between -50 and +50, yes Reverb: Indeed Chorus: Indeed Dual: In agreement. You can play two distinct sounds at once, such as a grand piano and string sound. Yes, auto power off. If the piano is not played within an hour, it will be turned off. Document: Indeed Bluetooth connectivity built in Metronome: 20–280 is the speed level. Soft/Sostenuto/Soft Speakers: 25W*2 Headphone *2 USD-MIDI connectors that can be connected to a computer or interface for Cakewalks and recording software AUX output: so you