This is for our household, and we don't have a long history with pianos. I bet professionals will notice the subtle details that are supposedly missing from the sound, but we don't notice. It sounds pretty good.
The speakers are under the keys, and this means they point to the floor, so you'll be listening to the sound reflected from the floor. This is important to consider if you have the piano on top of carpets or some other absorptive material. Gladly, you always have the option to plug in headphones or external stereo speakers if you wish. The headphone sockets are hidden on the left corner, under the keys. This is an important detail that doesn't actually appear in any product pictures. I purchased this without being sure that the headphone sockets exist, but rest assured, they exist.
The product has a lot of possibilities to configure the sound, the velocity of keys, metronome. We haven't explored it all yet.
Last but not least, it is inexpensive but good quality and good appearance.