Two Model S-15 on a furniture
Steinway & Sons

Model S-15


The Model S series has been installed in hundreds of high performance home cinemas and living rooms all over the world. It is petite and so discreet it can be installed without compromising décor, but don´t let the size fool you. The Model S-15 is an incredibly powerful speaker recognized with numerous awards and accolades, making it the clear choice for those seeking perfection at a competitive price point.

Logic-defying performance

The performance of the petite Model S is nothing short of extraordinary. The reason is partly due to the innovative design of the Steinway & Sons Model S-15 speaker. Because the Model S-15 relegates bass duties to boundary woofers, it reproduces only high and midrange frequencies, and it does both with incredible volume capabilities and zero distortion. Its legendary performance makes it a perfect match for medium-sized high-performance home theaters.

Ambience enhancing radiation

A key feature of the Model S-15 speaker is its innovative AER (Ambience Enhancing Radiation) dipole tweeter design. This design disperses the highest frequencies, which produces a spacious and live effect throughout the listening room, similar to the effect you get from our flagship Model D speaker or a live instrument.

Model S on a table
Model S-15
Model S in white

Unique features

Model S-15 construction
Ultra-rigid construction

Hold the Model S-15 in your hand, and you’ll immediately feel the quality of its surprisingly heavy, ultra-rigid low-resonance construction. Inside, a matte gold colored aluminum frame serves as the backbone. The midrange driver is tightly clamped between the metal back and front, preventing any resonance. The design is a reference to the original Steinway & Sons Model S piano, featuring a perfect high-gloss-lacquer cabinet with the matte gold inner construction shining through, ennobled with the original Steinway & Sons logo.

Extraordinary midrange driver and tweeter

Only the best is good enough, even in our smallest loudspeaker, which offers an Air Motion Transformer with an ultra-thin, folded Kapton diaphragm for completely clear, distortion-free performance even during the loudest crescendos. The midrange is taken over by a light aluminum cone driven by an extremely powerful neodymium magnet. When combined with one of the Steinway & Sons woofer models, the sound performance belies its size.

Model S-15 close up tweeter
Model S-15 close-up dipole
Ingenious dipole tweeter design

Our large flagship Model D loudspeaker is famous for its dipole design, exciting the sound in a room like an instrument would. But a dipole design in a very small on-wall speaker? Impossible? Meet the Model S-15, featuring a dipole tweeter with our ingenious AES technology, Ambience Enhancing Radiation. It diverts the backwards sound to either side, using a specifically angled reflector that extends the sound field while it also cancels-out reflections at the room’s nearest sidewalls, for the purest sound.

Model S-15


Frequency range: 120 – 22k Hz
Max SPL @ 1m: 114 dB
Amplification needed: 1 channel
Dimensions (H x W x D): 26.0 x 20.0 x 7.9 cm / 10.2 x 7.8 x 3.1 in
Weight: 4.4 kg / 9.7 lbs
Finish: Matte black, satin silver, high gloss black, high gloss white, custom finishes available

Fact sheet
Installation manual
Technical drawings


Steinway Surface
D-Tools logo

Awards for Steinway & Sons Model S-15

Editors choice for S-15
Golden Ear award for S-15
Robb Report award for S-15
Editors choice award for S-15
Singapore tatler award for S-15
Editors choice award 2014 for S-15
Editors choice award 2015 for S-15
Editors choice award 2016 for S-15
Editors choice award 2017 for S-15
Steinway & Sons logo

The smallest of the grands

The Steinway & Sons Model S speaker is named after the smallest of the Steinway grands, the Steinway and Sons Model S piano. This design was introduced in the 1930s to invite the majesty of the Steinway sound into almost any space.

You can read more about the Model S piano here.

Model D piano

Integrated system approach

All Steinway & Sons products can be combined for individual Steinway & Sons sound systems and follow our integrated system approach. The chosen loudspeakers are programmed into the processor, and amplifiers are connected reliably using our own digital signal connection. RoomPerfect™ will further acoustically calibrate the loudspeakers to the room. With this integrated system approach, we can guarantee the legacy of absolute perfection that comes with the Steinway & Sons partnership. A perfection which can never be attained mixing products “off the shelf” from different manufacturers.

This loudspeaker can be combined with the following models, depending on the room and customer wishes.

Model M center
STEINWAY & SONS Model M center