Also known as
Yamaha PSRS-550-S, Yamaha PSRS 550 S

Amazingly authentic Voices, exciting backing Styles with 16-track sequencer and Style Creator 

61-key digital workstation with 796 amazingly realistic sound voices. 

• 283 realistic instrument voices, 11 Regional voices, 480 XG voices, 14 Drum/SFX kits and 8 Regional Drum/Percussion kits 
• 16-track sequencer 
• Style Creator 
• 176 built-in accompaniment styles including 14 Regional styles 
• Fully XG-compatible 

The PSR-S550 inherit the high-quality sound
features of the PSR-S700/S900 to the max, resulting in improved musical
performance through increased polyphony and more voices variations,
Using the 16-track sequencer and Style Creator, the ability to produce
a wide array of music has greatly increased. 

Keyboard/Polyphony

61 regular-sized touch sensitive keys and 64-note polyphony.
Wide Selection of Voices & Styles

Total of 294 realistic instrument voices (283 panel voices, 11 Regional voices, 480 XG voices, 14 Drum/SFX Kits and 8 Regional Drum/Percussion Kits), and 176 accompaniment styles (including 4 Arabic, 2 Indian, 2 Chinese, 2 Mexican, 3 Latin & 1 Brazilian Style) which allows the enjoyment of regionally unique music, making it possible to have even more fun with music.
Amazingly Realistic Sounds

Yamaha''s highly acclaimed Sweet! and Cool! Voices deliver incredibly natural and dynamic sound. Use the Pitch Bend wheel, and hear these Voices - especially the Sax and Trumpet - truly come alive!
Style Creator

Style Creator supports original style production and style editing. The newly added regional voices can also be used, expanding the joy of performing music.
XG-compatible

It provides more voices and variations, as well as greater expressive control over voices and effects, and to ensure compatibility of data well into the future.
Music Database plus External Files

You want to play music in your favorite style, but you''re not sure how to select the best voice and style for the type of music you want to play ... simply select the appropriate style from the Music Database. The panel settings will automatically be adjusted for the ideal combination of sounds and style! Furthermore, this instrument allows Music Database files transferred from a computer or stored on a USB flash memory device. These files can be used in the same way as the internal Music Database.

Further Information:
Body Color Silver
Size/Weight
Dimensions Width 946mm (37-1/4")
Height 130mm (5-1/8")
Depth 402mm (15-7/8")
Weight Weight 7.5kg (16lbs., 9oz.)
Control Interface
Keyboard Number of Keys 61
Type Organ Style
Touch Response Yes
Other Controllers Pitch Bend Yes
Display Type Full Dot LCD
Size 320 x 240 dots
Color Monochrome
Contrast Yes
Score Display Function Yes
Lyrics Display Function Yes
Language English, Japanese
Panel Language English
Voices
Tone Generation Tone Generating Technology AWM Stereo Sampling
Polyphony Number of Polyphony (Max.) 64
Preset Number of Voices 294 + 480 XG + 22 Drum/SFX Kits
Featured Voices 11 Regional Voices, 8 Regional Drum/Percussion kits, 11 Sweet! Voices, 16 Cool! Voices, 13 Live! Voices
Compatibility XG Yes
XF Yes
GM Yes
Effects
Types Reverb 35 types
Chorus 44 types
DSP 237 types
Master EQ 5 Preset
Functions Dual/Layers Voice layer (RIGHT 1, 2)
Split Separate split points for Chord and Voice (LEFT)
Panel Sustain Yes
Mono/Poly Yes
Accompaniment Styles
Preset Number of Preset Styles 176
Featured Styles 4 Arabic Styles, 2 Indian Styles, 2 Chinese Styles, 2 Mexican Styles, 3 Latin Styles and 1 Brazilian Style
Fingering Multi / Full Keyboard
Style Control INTRO x 3, MAIN VARIATION x 4, FILL x 4, ENDING x 3
Custom User Styles Yes
Style Creator Yes
Other Features Music Database 600 + External Files
One Touch Setting (OTS) 4 for each style
Songs
Recording Number of Songs 5
Number of Tracks 16
Data Capacity Approx. 10,000 notes (when only "melody" tracks are recorded) Approx. 5,400 chords (when only "chord" tracks are recorded)
Recording Function Quick Recording, Multi Recording
Compatible Data Format Playback SMF (Format 0 & 1), Style File
Recording SMF (Format 0)
Functions
Registration Number of Buttons 8 (x 8 Banks)
Demo/Help Demonstration Yes
Overall Controls Metronome Yes
Tempo Range 5 - 280
Transpose Yes
Tuning Yes
Octave Button Yes
Storage and Connectivity
Storage Internal Memory 800KB
External Drives Optional USB Flash Memory (via USB TO DEVICE)
Connectivity DC IN DC IN 16V
Headphones x 1
AUX Pedal 1Footswitch (optional)
LINE OUT Shared with Phones
USB TO DEVICE x 1
USB TO HOST Yes
Amplifiers and Speakers
Amplifiers Amplifiers 12W + 12W
Speakers Speakers 12cm x 2 + 3cm x 2
Power Supply
Power Supply Adaptor (PA-301/PA-300)
Power Consumption 25W
Bundled Software
CD-ROM Yes
Accessories
Included Accessories Music Rest Yes

Manufacturer Website : Yamaha