Best speaker/system piano concerts

Great piano reproduction by any system becomes evident when you notice that all recorded pianos sound somewhat different from each other.

Without going into wordy sonic descriptors I would go with Focals you pick the model based on budget along with Pass Labs amplification preferable something in the XA series.  

Chuck 

Here you go:

https://carusopianos.com/browse-pianos/player-pianos

Best reproduction of piano sound.

Kalali nailed it all of those will sound more like a Piano and be more beneficial (physically & mentally)  then sitting and listening to recorded music.

I play a Mason & Hamlin myself (Classical Piano) predominantly Chopin. 

Chuck 

@wolf_garcia

You write, "Great piano reproduction by any system becomes evident when you notice that all recorded pianos sound somewhat different from each other."

I think that you are setting the bar far too low for what the OP has in mind. Any decent system can differentiate a Yamaha and a Steinway Concert. What I meant by writing, "doesn’t quite sound like the grand upstairs," is not a reference to the timbral differences but the percussive attack, which is a property of the generic instrument, and is very hard to reproduce.

That requires great speed everywhere in the chain, and that requires subtlety of electronic design.