YAMAHA ARIUS YDP-166 Digital piano with 88-weighted keys and authentic piano sound. Classic design, perfect for beginners and home practice.
- 88-key GrandTouch-E™ keyboard delivers the natural feel of an acoustic piano.
- CFX Grand Piano Voice captures the rich tone of our flagship concert grand piano.
- Three pedals (damper, soft, sostenuto) for expressive tone and precise control
- 20W × 2 stereo amp and 12cm speakers with diffuser grilles deliver rich, immersive sound.
- Traditional upright design with refined details, fits seamlessly into any living space.
- Plug in headphones to practice quietly.
- With 10 voices and 353 songs, you can explore a variety of ways to play and learn.
- Bluetooth® connectivity lets you stream music, easily control settings, and connect with learning apps.
Learning to express yourself musically is about more than proper technique—you also need to build a sense of musicality and develop a feeling for what you want to share with the world.
ARIUS pianos are more than just tools for practice—they are partners on a lifelong musical journey, allowing you to pour your full range of emotions into the keys, and discover your capacity to breathe life into music.
For over a century, Yamaha has crafted the pianos played on the world’s greatest stages. The ARIUS Series brings this heritage and technology into your home with instruments designed to offer beginning players and those returning to playing after a break the authentic feel and resonance of acoustic pianos.
For beginning players or those have just returned to playing the piano, it’s important to choose a instrument that possesses one of the key factors behind the expressive power capabilities of the piano—the ability to respond to your touch exactly as you intended.
When your piano blends in at home, music becomes an integral part of everyday life.
ARIUS digital pianos feature refined designs and convenient features in compact units that are perfect for apartments, living rooms, and other spaces in the home.
Smart device connectivity along with recording functions and expressive Voices ensures that daily practice is more fun and effective, making music an indelible part of your everyday life.
| Size/Weight | Dimensions | Width | 1,357 mm [53-7/16″] | 1,357 mm [53-7/16″] |
|---|---|---|---|---|
| Height | 849 mm [33-7/16″] (With music rest raised: 1,003 mm [39-1/2″]) | 815 mm [32-1/16″] (With music rest raised: 969 mm [38-1/8″]) | ||
| Depth | 422 mm [16-5/8″] | 422 mm [16-5/8″] | ||
| Weight | Weight | 42 kg [92 lbs., 10 oz.] | 38 kg [83 lbs., 12 oz.] | |
| Dimensions of Packing Box | W x H x D | 1,421 mm x 468 mm x 544 mm [55-15/16″ x 18-7/16″ x 21-7/16″] | 1,421 mm x 412 mm x 539 mm [55-15/16″ x 16-1/4″ x 21-1/4″] | |
| Control Interface | Keyboard | Number of Keys | 88 | 88 |
| Type | GrandTouch-E™ Keyboard: synthetic ebony and ivory key tops, escapement | GHS (Graded Hammer Standard) keyboard with matte black keytops | ||
| Touch Sensitivity | Hard, Medium, Soft, Fixed | Hard, Medium, Soft, Fixed | ||
| Pedal | Number of Pedals | 3: Damper (with Half-pedal function), Sostenuto, Soft | 3: Damper (with Half-pedal function), Sostenuto, Soft | |
| Panel | Language | English | English | |
| Cabinet | Key Cover Style | Sliding | Sliding | |
| Music Rest | Yes (with music braces) | Yes | ||
| Voices | Tone Generator | Piano Sound | Yamaha CFX | Yamaha CFX |
| Virtual Resonance Modeling (VRM) | Yes (VRM Lite) | Yes (VRM Lite) | ||
| Polyphony | Number of Polyphony (Max.) | 192 | 192 | |
| Preset | Number of Voices | 10 | 10 | |
| Effects | Types | Reverb | 4 types | 4 types |
| Intelligent Acoustic Control (IAC) | Yes | Yes | ||
| Stereophonic Optimizer | Yes | Yes | ||
| Functions | Dual | Yes | Yes | |
| Duo | Yes | Yes | ||
| Songs | Preset | Number of Preset Songs | 10 Voice Demo, 50 Classics, 303 Lesson Songs | 10 Voice Demo, 50 Classics, 303 Lesson Songs |
| MIDI Recording | Number of Songs | 1 | 1 | |
| Number of Tracks | 2 | 2 | ||
| Data Capacity | Approx. 150 KB/Song (approx. 11,000 notes) | Approx. 150 KB/Song (approx. 11,000 notes) | ||
| Compatible Data Format | Playback | SMF (Format 0, Format 1) | SMF (Format 0, Format 1) | |
| Recording | SMF (Format 0) | SMF (Format 0) | ||
| Functions | Overall Controls | Metronome | Yes | Yes |
| Tempo Range | 5 – 280 | 5 – 280 | ||
| Transpose | −6 – 0 – +6 | −6 – 0 – +6 | ||
| Tuning | 414.8 – 440.0 – 466.8 Hz (approx. 0.2 Hz increments) | 414.8 – 440.0 – 466.8 Hz (approx. 0.2 Hz increments) | ||
| USB Audio Interface | 44.1 kHz, 24 bit, stereo | 44.1 kHz, 24 bit, stereo | ||
| Bluetooth | Audio, MIDI (varies by area) | Audio, MIDI (varies by area) | ||
| Storage and Connectivity | Connectivity | Headphones | Standard stereo phone jack (× 2) | Standard stereo phone jack (× 2) |
| USB TO HOST | Type B | Type B | ||
| DC IN | 16 V | 12 V | ||
| Amplifiers and Speakers | Amplifiers | 20 W × 2 | 8 W × 2 | |
| Speakers | 12 cm with diffuser × 2 | 12 cm with diffuser × 2 | ||
| Power Supply | AC Adaptor | PA-300C | PA-150 or an equivalent recommended by Yamaha | |
| Power Consumption | 13 W (When using PA-300C AC adaptor) | 9 W (When using PA-150 AC adaptor) | ||
| Auto Power Off | Yes | Yes | ||
| Accessories | Included Accessories | Owner’s Manual, Warranty*, “50 Classical Music Masterpieces” Music Book, Online Member Product Registration, AC adaptor*: PA-300C, Power cord*, Bench* * May not be included depending on your area. Check with your Yamaha dealer | Owner’s Manual, Warranty*, “50 Classical Music Masterpieces” Music Book, Online Member Product Registration, AC adaptor*: PA-150 or an equivalent recommended by Yamaha, Bench* * May not be included depending on your area. Check with your Yamaha dealer | |
| Separately Sold Accessories | Headphones (HPH-150, HPH-100, HPH-50), Pedal unit (FC35), AC adaptor (PA-300C) | Headphones (HPH-150, HPH-100, HPH-50), Pedal unit (FC35), AC adaptor (PA-150 or an equivalent recommended by Yamaha) | ||
* The contents of this manual apply to the latest specifications as of the publishing date. To obtain the latest manual, access the Yamaha website then download the manual file. Since specifications, equipment or separately sold accessories may not be the same in every locale, please check with your Yamaha dealer.

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