Ah but the failing is that with piano music, the piano must be a Yamaha, preferably the same color. If not, the sound will be colored. (BTW, I do remember the NS-1000's. Wow. I was hooked.)
Unbelievable
Yamaha really made this statement:
Glossy black piano finish provides improved signal-to-noise performance
https://europe.yamaha.com/en/products/audio_visual/speaker_systems/ns-5000/index.html
I thought I would seek opportunity to hear these speakers, but now I do not think so