| Backframe/Posts |
Staggered spruce backposts (5). Total CSA: 223 cm2 (34.5 in2). Thickness of post: 4.5 cm. Width of post: 10 cm. |
| Pinblock |
Laminated multi-directional Maple. Thickness: 30 mm. |
| Soundboard |
Solid Spruce. Linear taper. Tapered from 9 mm top to 7 mm bottom. Vibrating area: 1.16 m2 (1,794 in2) |
| Ribs |
Ribs notched into inner rim (no floating ribs). Ribs made of spruce and staggered/graduated. Number of ribs: 10 |
| Bridges |
Vertically laminated maple base with solid maple cap. |
| Scale |
Designed by Steinway. 17,505 kg (38,512 lb) tension. |
| Plate |
Cast iron, painted with Steinway Gold. |
| Tuning Pins |
Carbon steel nickel coating. |
| Strings |
Roslau wire. Number of sizes of treble strings: 12. Lowest tenor note: 32. Number 1 speaking length: 123.2 cm (48.5”) |
| Hammers |
Specified by Steinway. Weight of topfelt: 6 kg (13 lb). |
| Action |
All wood (no plastic) for all moving parts. Aluminum action rails. |
| Keys |
Steinway design. Material – Spruce or Basswood. |
| Keybed |
Lauan, Maple, Spruce. |
| Pedals |
Brass. Muffler. |
| Features |
All wood Back construction (no MDF except in cabinet parts). Solid filler blocks in backframe (near top). Backposts are large and staggered. |