PETROF Mistral 284

PERFECTION WITHOUT COMPROMISE

We present to you PETROF’s masterpiece, the flagship of the PETROF brand – the Mistral concert grand. Measuring 2,840 mm (9’2″) in length it is our largest piano, and is beloved of musicians the world over chiefly for its tremendous bass and resonant treble. Artists find in it a trusty companion when performing the most demanding works; it also has a highly presentable appearance and possesses the soft, romantic tone so characteristic of all PETROF grand pianos.

Technical Specifications

Length (mm)	2840
Width (mm)	1580
Height (mm)	1025
Weight (kg)	576
Sound board material	Resonance spruce wood
Active area (m²)	2,029
Ribs (number, shape)	16, asymetric
Soundboard construction	diaphragmatic tapered by CNC shaper   9,5 – 7,5mm
Cast iron plate	Wet sand casting
Surfacing of iron plate	light gold metallic paint, diamond effect
Pin block – material	Multiplex beech plywood, density 800 – 850 kg/m3
Inner rim material	12 laminas – beech, birch
Inner rim thickness	50 mm
Wooden frame posts	5 longitudinal + 2 cross
Descant post material	spruce
Cut off bar (corner cross rib)	round shaped, multiple birch or beech
Outer rim – material	birch plywood sandwich, inner veneer  Ebony Makassar
Bridge – treble	solid maple wood
Bridge – bass	solid maple wood
Bridge pins	steel – ground tips
Agraffes material – number	brass, 1-53
Duplexes – front	d2 – c5
Duplexes – rear	ais – c5
Strings – material	steel wire Röslau Germany, copper winding Degen Germany
Hitching of plain strings	single
Dampers – number	1 – 69
Action	standard –  RENNER ORIGINAL
Hammer heads	RENNER original
Keyboard	Tangential sawn spruce wood, individually balanced with lead
Black keys	Ebony wood
Pedals	left – Unacorda (Piano) pedal, middle –  Sostenuto (Prolongement) pedal, right – Sustein pedal
Legs and castors	thick legs, big braked castors
PETROF sign on right side wall	PETROF
Felts colour	red + black
Hydraulic slow close fallboard mech.	yes