As "old" player piano lessons at age 9 and a decade-long break, I'm used to both piano and later velocity sensitive keyboards. This Yamaha is now both mechanically and acoustically a piano very close. At the keyboard is nothing to complain about, the acoustics of the Grand Piano 1 (samples from Yamaha grand piano) is common across much impressive and better than a 08/15 piano. Only in the heights it rattles a bit, as it was written, the Mitrezensenten. But that falls on only if you "are daring enough" or a professionally trained ear has. The usual instruments are rather uninteresting, who is interested in "real" electronic music, the P105 will anyway depend on the computer - making it without a murmur. The MIDI - software should be downloaded from the Yamahaseite.
To assess negative really is the sustain pedal. It slips away, to a smooth surface, it keeps better, but then rattles when actuated. The music stand is a nice size, 3-4 A4 fit side by side.
The digital gadgets like Piano Style, Duo function, etc. do not interest me really, as I said, for it to use the computer.
One star deduction is available for: pedal, slightly clanking treble, no dust cover case
The stand can be built easily even by the way.
Thoroughly recommended, pedal if necessary. Regarding with some tinkering. Even better.