The Arius YDP-184 features a piano Voice created with samples of the Yamaha CFX flagship concert grand piano, as well as the incredibly realistic keyboard feel that recreates the sensation of playing an acoustic instrument. By using a similar hammer mechanism (with no springs) as is found in a grand piano, the GH3 keyboard action reproduces the touch of an acoustic instrument, from the heavier feel in the lower register to the lighter touch in the upper octaves. It also features a three-sensor configuration which accurately senses and interprets the behavior of the keyboard to create a response and feel very much like that of a grand piano. Moreover, the VRM function simulates the luscious resonance effect on acoustic pianos—where the sound of one string causes sympathetic vibration in other strings and the soundboard. You can customize the piano sound (in a special “Piano Room” setting group) by adjusting various parameters such as string resonance, damper resonance and touch response.

Yamaha’s flagship 9’ concert grand piano, the CFX, offers sparkling highs and a powerful resonant bass with a sound that projects to the furthest reaches of any concert hall. The CFX was played by the winner of the prestigious International Chopin Competition in 2010, and has since gained recognition as one of the greatest concert grands of modern times.

In a grand piano, sound resonates throughout the body of the instrument, producing a rich reverberation that envelops the listener in sound. This phenomena is reproduced perfectly in the Arius through enhanced Virtual Resonance Modeling (VRM).

The original VRM calculates the various states of the strings for each of the 88 notes on the keyboard, from one instant to the next, and timing and depth of damper pedals pressed.

The enhanced VRM now also calculates aliquot resonance in the upper octaves, and the full resonance of the soundboard, rim, and frame. This technology allows for vivid, bright, richly-varied expression that reflects the limitless number of factors inherent in piano performance.


Graded Hammer 3 (GH3) 88-key piano action with synthetic ebony and ivory keytops reproduces the touch of an acoustic piano, from the heavy feel in the lower register to a lighter touch in the upper octaves. It also features a three-sensor configuration, which accurately senses and interprets the behavior of the keyboard in order to provide a grand piano-style response and feel. This allows for quick note repetition and authentic expressive control. The piano keyboard with synthetic ivory key tops provide a tactile surface to the white keys, absorbing moisture from the fingers and preventing them from slipping.

Half-damper pedal control creates more detailed nuance and subtlety when playing, similar to pedaling on a grand piano. This feature allows for continuously increasing lengths of sustained notes, from slight to full, as the sustain pedal is depressed.

Stereo Sustain samples provide mellow reverberations when the player depresses the damper pedal. Similarly, Damper Resonance provides broad and deep resonance when the pedal is used. The result is more realistic sound, similar to that of an acoustic piano.

It is possible to detect the subtle changes that occur when the players begins to press the pedal while striking a key.

The MIDI recording function built into the instrument allows players to record performances*.

Additionally, players can record up to 16 tracks for simultaneous playback, meaning that both hands can be recorded separately, or allowing them to overdub with different voices.

* Recordings are made in Standard MIDI file (SMF) format. Compatible software is required for playback of the recorded data on a computer.

When using headphones, the Stereophonic Optimizer lets players enjoy the dispersed sound heard when sitting in front of an acoustic piano. With the Stereophonic Optimizer, Voices sampled from acoustic pianos appear to come from the body of the instrument.

This provides a comfortable, natural experience that removes the drawbacks of performing with headphones.


A standard USB cable can be used to connect the instrument to a computer or mobile device, opening up a world of creativity, entertainment, and education. iOS devices can be connected to the instrument using the Yamaha UD-BT01, or the Lightning-USB Camera Adaptor.

The instrument can be used to interact as a controller and/or sound source with a variety of music creation applications.

MPN: YDP184R

• CFX flagship concert grand piano sample
  
• Improved VRM (Virtual Resonance Modeling)
  
• Smooth Release
  
• Key-Off samples
  
• 256-note polyphony
  
• 24 Voices
  
• GH3 (Graded Hammer 3) keyboard with synthetic ebony and ivory keytops
  
• 128 x 64 full dot LCD
  
• Dual/Split/Duo
  
• 20 rhythms
  
• 16-track MIDI recording
  
• USB TO HOST and USB TO DEVICE
  
• Dual headphone jacks
  
• 30 W x 2 amplifiers
  
• 16 cm x 2 speaker system
  
• Acoustic Optimizer
  
• Intelligent Acoustic Control (IAC)
  
• Stereophonic Optimizer