Bösendorfer Grand Piano 225 — Imperial Line, 92-Key Grand | Piano Gallery, Idaho Falls
The Bösendorfer Grand Piano 225 is among the most acoustically distinguished instruments available at Piano Gallery in Idaho Falls — a 92-key concert grand that extends beyond the standard keyboard range all the way down to the Subcontra F, unlocking an orchestral depth and tonal palette that no standard 88-key instrument can match. Part of Bösendorfer's Imperial Line alongside the legendary 290 Imperial, the 225 is built for pianists who demand the full spectrum of the instrument's expressive potential. It is equally at home as a chamber instrument, a solo recital grand, or the centerpiece of a serious private music room.
The 225's additional bass notes do more than extend range — they fundamentally change the resonance of the entire instrument. The extra strings vibrate sympathetically throughout the performance register, enriching every note with additional harmonic depth and painting tonal colors that simply aren't available on a conventional grand.
Product Overview
The Grand Piano 225 is constructed on Bösendorfer's Resonance Case Principle, in which the entire spruce body — rim, inner construction, and soundboard — functions as a unified resonating system. The core of the piano rim is a specially grooved 10 mm quarter-sawn spruce piece, bent by hand to follow the instrument's silhouette. When any key is played, the integrated spruce components throughout the body become acoustically active, producing the layered harmonic richness and tonal purity that has defined the Bösendorfer sound since 1828. At 225 cm in length and weighing 419 kg, this is a serious instrument built to a concert standard in every dimension.
The spruce used in construction is naturally air-dried through four full seasons before it enters the Bösendorfer workshop in Vienna. Combined with up to a year of skilled hand-building by Bösendorfer artisans, the total journey from raw material to finished piano spans approximately six years. More than 80% of the instrument's structural components are spruce tonewood — a higher proportion than any other manufacturer — giving the 225 its characteristic tonal density and complexity across all registers.
The 225 is available in polished ebony as well as an extensive range of premium veneers including Cherry, American Walnut, Pyramid Mahogany, Pommele, Macassar, Burr Walnut, Vavona, Wenge, Amboyna, and Bird's Eye Maple. Custom finishes, bespoke colors, and hand-engraved emblems are also available through Bösendorfer's individual finishing program. Contact Piano Gallery to discuss the specific finish of the instrument currently in stock in Idaho Falls.
Ideal For
- Concert pianists and advanced performers seeking a grand piano with an extended 92-key range and true orchestral tonal presence
- Serious home musicians and collectors who want a performance-level Bösendorfer grand piano available to play today in Idaho Falls
- Performers and educators working with repertoire by Busoni, Bartók, Ravel, and other composers who wrote for the extended keyboard
- Private buyers and institutions investing in a handcrafted Austrian grand piano with multi-generational longevity
- Pianists upgrading to one of the finest large-format grand pianos available at an Idaho Falls piano store
Key Features
92-Key Extended Range — Imperial Line Bass Where a standard grand provides 88 keys, the 225 adds four additional bass notes descending to the Subcontra F. These extra strings don't just extend range — they vibrate sympathetically throughout the entire performance register, enriching the harmonic content of every note played and giving the 225 an orchestral warmth and tonal complexity unavailable on any standard-range instrument. Certain works by Busoni, Bartók, and Ravel can only be performed as written on instruments of this specification.
Resonance Case Principle — Full-Body Sound Formation The entire spruce body of the 225 participates in sound production, not just the soundboard. The specially grooved inner rim is bent by hand around the instrument's silhouette, and when notes are played, the integrated spruce components throughout the case become acoustically active. This construction — unique to Bösendorfer — produces the brand's characteristic richness of tone color and its legendary pure, brilliant projection.
Bösendorfer Action — Refined Controllability Developed in direct cooperation with concert artists and technicians, the Bösendorfer action is built to Bösendorfer's own refined specification rather than an industry standard. It transfers the finest articulation of touch to the strings with exceptional sensitivity, giving performers precise control over dynamics and phrasing from the most delicate pianissimo to full fortissimo.
Independent Capo d'Astro — Precision Upper Register Bösendorfer remains the only piano manufacturer to use a fully detachable, independent Capo d'Astro in the upper register. This allows for extremely fine intonation adjustment in the high treble — preserving the original Bösendorfer sound character with precision across the full life of the instrument.
Traditional Sand-Cast Frame — Generational Stability The iron frame is produced in Austria using traditional sand-casting methods, then left to rest outdoors for six months before entering production. This process releases internal forging tension, allowing the frame to remain dimensionally stable under the approximately 20 tons of combined string tension and maintain consistent tuning stability for generations of use.
Hand-Looped Individual Stringing Every string in the 225 is attached with a handmade loop, individually fitted rather than mass-installed. This improves tuning stability over time as the loops settle and self-equalize, and it makes future service and string replacement significantly more straightforward — a meaningful consideration for an instrument intended to last a lifetime.
What's Included
- Bösendorfer Grand Piano 225
- Matching Bench
- Bösendorfer manufacturer warranty
- Ask us about our white glove delivery and in-home setup service
Technical Specifications
| Specification | Details |
|---|---|
| Type | Grand Piano — Imperial Line |
| Size | 225 cm length × 102 cm width × 159 cm height |
| Keys | 92 (extended range to Subcontra F) |
| Weight | 419 kg |
| Finish | Contact Piano Gallery for finish of in-stock instrument |
| Soundboard | Air-dried Spruce — Resonance Case Principle (full-body resonance) |
| Action | Bösendorfer custom specification, artist-developed |
| Pedals | 3 pedals (una corda, sostenuto, sustain) |
| Strings | Custom bass strings: steel core with 1–2 copper-wound layers, hand-looped |
| Pin Block | Open — 3 layers of 7 mm quarter-sawn maple, cross-grained, 1.5 mm walnut veneer top layer |
| Frame | Traditional sand-cast iron, cured 6 months before use |
| Origin | Handcrafted in Vienna, Austria |
Experience This Grand Piano Today
The Bösendorfer Grand Piano 225 is in stock now at Piano Gallery in Idaho Falls — ready for you to sit down and play. There is no substitute for hearing this instrument's extended bass register and full-body resonance in person, and our team is here to walk you through everything from its history to its specifications. Visit our Idaho Falls showroom, or contact us to arrange white glove delivery anywhere in the continental United States.
