A black grand piano with the lid open, revealing the strings and interior. The brand name PETROF is visible on the side, and the piano has gold accents on the wheels and pedals.

PETROF P284 Mistral

Discover the flagship of the PETROF brand: the P 284 Mistral, a concert grand piano crafted for the most demanding performances. Measuring an impressive 284 cm (9'4") in length, this is PETROF’s largest and most powerful instrument, revered by artists worldwide for its thunderous bass, radiant treble, and unmistakably romantic tone.

Designed and built in the Czech Republic, the Mistral features a European mountain spruce soundboard, solid beech bridges, and a duplex agraffe design that ensures rich resonance and tonal clarity. Its elegant high-polish ebony finish and commanding presence make it a centerpiece on any stage.

A close-up of a Petrof grand piano keyboard with black and white keys and a partially open lid showing the strings inside.

    • Width - 1580 mm | 5'2"

    • Length - 2840 mm | 9'4"

    • Height - 1025 mm | 40 3/8"

    • Weight -  576 kg | 1270 lb

  • 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 The highest quality hammerheads made in Germany, individually voiced

    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

Close-up of a grand piano interior showing strings, tuning pins, and a golden emblem with a beaver logo.