This keyboard has been very good value for the low price point and its features. The folding feature is useful for portability. There have been some quality issues - 4-6 keys go mute on some voices, the volume sometimes goes uncontrollably high in th 3rd octave keys, and the main function knob does not work in some positions. The semi-weighted key action itself while better than no weight, does give high springback which causes muscle strain in extended playing. Overall still useful as a portable, full 88-key device for practice, though due to above issues cannot use all the voices.