Yamaha Arius YDP-S55 White

The Arius "S" Series: The Yamaha Piano Spirit Designed for Modern Interiors

The Yamaha Arius YDP-S55 is part of the "S" variant of the Arius range, known for its slimmer format and furniture-style design that easily fits into living rooms, offices, or bedrooms. The goal remains true to Arius DNA: to offer a digital piano oriented towards acoustic piano, without unnecessary complexity, with serious touch, Yamaha reference sound, and learning features that support both beginners and returning pianists.

Keyboard Design

At the heart of the experience, the 88-key Graded Hammer 3 (GH3) keyboard reproduces graded hammer action: heavier in the bass and lighter in the treble, just like an acoustic piano. This gradation improves dynamic control, chord precision, and rhythmic stability, while maintaining good responsiveness for faster playing.

The keys feature synthetic ivory and ebony surfaces for a more natural feel under the fingers and better grip, especially during long sessions. The 3-pedal system (Sustain with half-pedal, Sostenuto, Soft) allows working on piano repertoire with more gradual pedal pressure and more musical legato control.

Sound Quality

The YDP-S55 is based on sampling of the Yamaha CFX concert grand piano, appreciated for its clear highs and deep lows. The Virtual Resonance Modeling Lite (VRM Lite) technology adds life to the sound by simulating sympathetic resonances, enhancing the sense of space and harmonic continuity, especially with the pedal.

With a 192-note polyphony and 10 voices, playing remains clean and smooth on chord-rich pieces, layered sounds (Dual), and passages with sustain. Sound projection is ensured by 2 x 20 W amplification and a Tone Escapement design that promotes more natural projection from the cabinet, while stereophonic optimization improves headphone listening comfort.

Built-in Effects

• 4 types of reverb
• Stereophonic optimization (headphones)
• Intelligent Acoustic Control (IAC)

Technical specifications

Effects	Reverb	Touch	Heavy
Arpeggiator	No	Split & layer	Partner mode, split
Bluetooth	No	Max polyphony	192
Speaker diameter	4,7"	USB to Host port	Yes
Number of speakers	2	Inputs	USB audio, USB Midi
Velocity sensitive	Yes	Outputs	3.5 mm headphone, 6.5 mm headphone
MIDI DIN I/O	No	Color	White
Number of keys	88	Finishing	Matt

Action	Graded Hammer 3 (GH3) hammer action	Functions	Dual, metronome, transpose (-6 / +6), tuning (414.8 - 466.8 Hz)
Key surfaces	synthetic ebony and synthetic ivory	Included sheet music	" 50 Classical Music Masterpieces "
Duo Mode	yes	Speaker system	2 x 20 W
Voices	10, including the Yamaha CFX concert grand piano	Design	Tone Escapement
Polyphony	192 voices	Connectivity	USB to Host, 2 headphone outputs on 6.35 mm stereo jacks
Resonance modeling	Virtual Resonance Modeling Lite (VRM Lite)	Dimensions	1353 x 309 x 792 mm
Reverb	4 types	Depth with lid open	317 mm
Stereo optimization	yes	Weight	40 kg
Intelligent Acoustic Control (IAC)	yes	Power supply unit	PA-300C included
MIDI recording	2 tracks