The P 125 F1 upright is a very popular model with great musical versatility. Players buy it for practice purposes and for home and school keyboard instruction, though when you sound its strings and allow its rounded and gentle tone to resonate, you will delight the guests at any venue. The F1’s cabinet combines both classical and modern design, which fits in with any home interior.
| Depth (mm) | 590 |
| Width (mm) | 1463 |
| Height (mm) | 1250 |
| Weight (kg) | 236 |
| Sound board material | Resonance spruce wood |
| Active area of soundboard (m²) | 1,1852 |
| Ribs (number, shape) | 10, spherical |
| Soundboard construction | wedgewise tapered, 9 mm in upper section - 7 mm in lower section |
| Cast iron plate | Wet sand casting |
| Surfacing of iron plate | nitrocellulose paint with bronze dust added |
| Pin block - material | Multiplex beech plywood, density 800 - 850 kg/m3 |
| Wooden frame construction, material | spruce wood, 3+2 posts |
| Cut off bar (corner cross rib) - material, number | beech, 1 |
| Cabinet material | MDF, plywood, solid wood |
| Bridge - treble | beech wood |
| Bridge - bass | beech wood |
| Bridge pins | steel - round tips |
| Agraffes material - number | brass, 88 |
| Strings - material | steel wire Röslau Germany, copper winding Degen Germany |
| Hitching of plain strings | double |
| Dampers - number | 1 - 70 |
| Action | Petrof |
| Hammer heads | Renner |
| Keyboard | Petrof |
| Keys balancing, touch weight | 52g in bass - 48g in treble |
| Pedals | left - Piano pedal, midle - Muffler (moderator) pedal, right - Forte pedal |
| Castors | yes |
| Felts colour | red |
| Hydraulic slow close fallboard mech. | yes |
