STEINWAY & SONS upright pianos are handcrafted to the highest standard of quality in the same factory as our grands, using the same materials, techniques, conditioning processes and craftsmen. The only difference is that they’re built in the “vertical department,” where those same processes are vertically oriented.

The result is the world’s finest upright, living up to the STEINWAY & SONS name in every respect.

The Steinway Traditional K-52 Professional Upright piano, first introduced in 1903, is a remarkable instrument that sets itself apart from other upright pianos. With a larger soundboard compared to many grand pianos, it boasts a truly resonant and captivating voice. This piano is a top choice for professional players in search of an upright instrument that delivers exceptional performance. Its versatility makes it suitable for all sizes of homes and apartments, ensuring that even those with limited space can experience the brilliance of a Steinway piano.

What sets Steinway & Sons upright pianos apart from others is their meticulous handcrafting process. These uprights are crafted in the same factory as their grand pianos, employing the same techniques, conditioning processes, and skilled craftsmen.

This commitment to craftsmanship and attention to detail results in the creation of the world's finest upright pianos, proudly upholding the esteemed reputation of Steinway & Sons. Incorporating over 125 patented features and processes, including the patented Diaphragmatic soundboard, Accelerated Action, and Hexagrip pinblock, Steinway upright pianos offer unparalleled quality and innovation.

Whether it's the expansive soundboard, the meticulous craftsmanship, or the incorporation of patented technologies, the Steinway Traditional K-52 Professional Upright piano stands as a testament to Steinway & Sons' dedication to producing instruments of unparalleled excellence. It is a remarkable instrument that captures the essence of the Steinway name in every aspect, delivering a musical experience that is truly second to none.




Bridges & Pinblock






Height 52 (132 cm)

Width 60 3/4 (154 cm)

Depth 26 3/8 (67 cm)

Net Weight 600 pounds (273 kg)


Back Frame: Solid birch mortised foot-piece. Solid birch soundboard lining. Grand-type maple laminated closing rim; unequaled vertical strength and stability.


Posts: 5 full-length tapered solid spruce braces with a volume of 3,600 cu. in. (58,993cm): assures that backframe will remain straight, promoting stable and consistent tuning. Strategically positioned with bottom ends tenoned into birgh foot-piece for positive vertical alignment. Spruce fill-blocks between posts at top of backframe capped with solid birch backing board for positive horizontal alignment.


Made from durable, resinous sugar pine to assure strong and constant support of string down-bearing on the soundboard. Rib ends are hand-fitted into their mounting surfaces virtually locking in the important soundboard crown.


Overstrung; twenty-six note bass/tenor break. Treble duplex.

Tension: 37,500 lbs. (16,875 kg)


Sturdy gray iron; filled, CNC-milled, and sealed; bronzed and lacquered.


Premium blued steel with rust-resistant, nickeled heads.


Treble: Ten whole & one-half sizes from high-tensile Swedish steel. Bass: Swedish steel core wire wound with pure copper. Longest, pressure bar/bridge: 46 3/8 (118 cm)


Premium wool top felt over premium wool under felt; treated to resist insects and moisture. Compression-wired to retain permanent shape. Hornbeam hammer moldings and shanks.


Vertical-cut premium wool for effective dampening.

Hornbeam heads for endurance.


White, quarter-sawn hornbeam parts are bushed with specially treated wool action cloth for freedom from friction. Parts are anchored in hard maple rails. Dependable, Direct-Blow design permits ALL parts of the action to lie above the brass capstan screws.


European spruce, individually weighed-off. Chip-proof, stain-resistant coverings for naturals; slip-proof, delicately abraded ebonized sharps. Tough, durable Linden wood buttons reinforce keys over balance rail permitting maximum tonal power with every strike. Longest: 16 1/8 (40.9 cm)


Made from planks of stable, quarter-sawn poplar. Horizontal planks are freely mortised together, while their ends are permanently mortised into vertical planks made of birch, presenting a vented system for humidity escapement while allowing for necessary expansion and contraction. Hand-milled to be flat and true correlating with keyframe for snug fit. Strong, rugged construction provides a solid mount for keyframe and action allowing for precise and prolonged action regulation. Thickness: 1 3/4 (4.45 cm)


Heavy, solid brass. Soft, sustaining, and full sostenuto