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1,178 mm (46-3/8”)
138 mm (5-7/16”)
412 mm (16-1/4”)
8.4 kg (18 lbs 8 oz.) not including batteries
Number of Keys
Soft, Medium, Hard, Fixed
LCD (Liquid Crystal Display)
Tone Generating Technology
AWM Stereo Sampling
Number of Polyphony (Max.)
Number of Voices
Live! Grand Piano + 236 panel Voices + 24 Drum/SFX kits + 40 Arpeggio + 457 XGlite Voices
1 Live! Voice, 8 Sweet! Voices, 3 Cool! Voices, 3 Dynamic Voices
10 types (assignable on control knobs)
Yes（for Internal/AUX IN）
Number of Preset Styles
ACMP ON/OFF, SYNC START, SYNC STOP, START/STOP, INTRO/ENDING/rit., MAIN/AUTO FILL, TRACK ON/OFF
Style File Format (SFF)
One Touch Setting (OTS)
Number of Preset Songs
Number of Songs
Number of Tracks
6 (5 Melody + 1 Style/Pattern)
Approx. 19,000 notes (when only “melody” tracks are recorded)
Compatible Data Format
Original File Format (SMF 0 conversion function)
Number of Buttons
4 (x 8 banks)
Yamaha Education Suite (Y.E.S.)
Lesson 1 – 3 (Listening, Timing, Waiting), Repeat & Learn, Chord Dictionary
11 – 280
-12 to 0, 0 to +12
427.0 – 440.0 – 453.0 Hz (approx. 0.2Hz increments)
Yes (Portable Grand Button)
Storage and Connectivity
Approx. 1.29 MB
USB flash drive
DC IN 12V
USB TO DEVICE
USB TO HOST
Yes (MIDI/Audio: 44.1 kHz, 16 bit, stereo)
Amplifiers and Speakers
12 W + 12 W (When using PA-300C AC adaptor)
12 cm x 2
AC Adaptor (PA-300C or an equivalent recommended by Yamaha) or batteries (Six“D”size alkaline (LR20), manganese (R20) or Ni-MH rechargeable batteries)
11 W (When using PA-300C AC adaptor)
Auto Power Off Function
Download from website
Number of Preset Patterns
Number of Preset Sections
The PSR-EW400 is the top of the line keyboard in PSR-E Series for both piano focused players and live performers. The 76-key touch response keyboard, various easy-to-use professional features and new Live! Grand Piano voice make this a great instrument for practice, performance and creating. 12W + 12W amplifiers drive on-board sound system, and L/R outputs provide professional connectivity to PA systems or recording hardware.
758 high quality voices featuring the new Live! Grand Piano voice
The PSR-EW400 includes 758 high quality voices ranging from acoustic to electric instruments. The new Live! Grand Piano voice makes piano performances sound inspired and expressive. The PSR-EW400 also features 8 Sweet! voices and 3 Cool! voices which use Yamaha's advanced sampling technologies to capture the realism and specific characteristics of each sound.
12W + 12W amplifiers with 12 cm Bass Reflexed speakers
12W + 12W amplifiers power the high-definition 12 cm Bass Reflexed speakers, delivering powerful, crystal clear sound, and offering solid support in standalone performance situations.
76 keys and 48-note polyphony
76 keys and 48-note polyphony allow you to perform with greater expression and flexibility. You can play complex musical passages without dropping a note!
Individual L/R output
Professional audio outputs make connecting to a PA system or studio hardware convenient and quick.
Assignable real-time control knobs, DSP Effects, and Pitch Bend
Two assignable, real-time control knobs let you filter and adjust your sound just like an analog synthesizer. 10 brand new DSP effects can be assigned and controlled by the knobs for dynamic and expressive live performance. The Pitch Bend wheel adjusts the pitch of the sound bringing voices like the Guitar, Sax and Trumpet to life.
Connectivity with audio and MIDI capabilities
The PSR-EW400 features audio transfer through the USB TO HOST terminal*. You can record your performance to your computer or smart device. Connecting to your iOS device adds a new dimension of MIDI control with apps. Connect an external audio player to the AUX IN jack and you can play along with your favorite tunes. The built-in, advanced Melody Suppressor lowers the volume of vocals and melody lines of the original recordings, leaving that part open for you to play**. *For iOS device connection, refer to the "iPhone / iPad Connection Manual" **Depending on the song, the volume of the melody part may not be affected.
USB TO DEVICE terminal
USB TO DEVICE terminal on the instrument lets you load and save your settings and songs to a USB flash drive, as well as transfer data from your PC.
Pattern function to create your own grooves - 25 patterns
The Pattern function puts a wealth of powerful loops and beats at your fingertips, allowing you to instantly create dynamically varied music on the fly like a DJ. And, for even more authentic performance, try the Crossfade and Retrigger functions.
Tap into instant inspiration with the Arpeggio function, which has been improved for smoother playability. Hold Mode and Allocated key-range free your hands, allowing you to improvise over the pattern. The 150 Arpeggio patterns adjust and morph around the notes and chords you play on the keyboard allowing for almost limitless creativity.
Worldwide sounds support your music
A rich set of ethnic sounds and scale tunings allow you to enjoy many styles of music around the world, including Latin, Indian, Arabic, African, Chinese, and more.
Yamaha Education Suite (Y.E.S.)
Yamaha Education Suite (Y.E.S.) is an advanced set of helpful learning tools built into the instrument, letting you teach yourself how to play and perform regardless of your ability. Choose from nine step-by-step lessons for left, right, or both hands. Y.E.S. helps you master a song with ease.
Get off to a flying start—choose a song and the Music Database automatically selects the best accompaniment and voices for you to start playing immediately.
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