Experimental design, cross-strung, 215-stringed (12 single strings and sixteen 2-string wound
choirs, fifty-seven 3-string unwound choirs),
2 keyboards, 340-keyed (85 keys in the
traditional piano keyboard and 255 keys in the
keyboard of P. von Janko system) (keyboards
extent is А of the double contra octave —
a of the four-line octave).
The frame is cast iron. The key action is hoppered.
Both keyboards have a common hammer
mechanism. The keyboard of P. von Janko’s system
(1856–1919) is 6-lined stepped (ladder-like). The
piano is equipped with the “harmoniopiano”
invented by V. I. Glavach (1849–1911), which is
a pneumatic mechanism for acquiring tremolo.
There are 3 pedals; the 3rd pedal is designed to
control the mechanism providing tremolo sound.
The upper front side is decorated with plated
carving (a profile of R. Wagner) and 2 bronze
candlesticks.
candlesticks.
