the sound of the instrument is not bad, but not really high class. unlike my portable speakers for 60 EUR. is the sound quality better, but it sounds as if some frequencies are missing. with bass I've also heard some distortion. as luggage, the size and weight of just portable. So quite convinced me that not product. something sound volume is lacking, possibly goes the but not in size. All other features are wirlich very good. That's why I also keep the device.