Year Released: 1991
Keyboard: 61 keys with velocity
Polyphony: 28 notes
ROM: 100 sounds, 101 rhythms
Dimensions: 968 mm x 405 mm x 136 mm
Weight: 6.3 kg
This keyboard is MIDI-enabled.
This keyboard has built-in 8-watt stero speaker(s).
Batteries: D x 6
Yamaha PSR-400 and PSR-500 Manual
Yamaha Portatone PSR-400 / PSR-500 Service Manual [Three Wave Music] ($20)
Power Supply Replacement for YAMAHA PSR-400 KEYBOARD ADAPTER UK 12V ($14.28)
Yamaha - PSR-I400 - USB Connector ($6.90)
Yamaha PSR-EW400 76-Key Portable Keyboard 2010s - Black ($300)
Yamaha PSR EW400 + ACCESSORI ($327.11)
Yamaha PSR-I400 61-Key Portable Keyboard, Metallic Dark Grey ($548)
Power Supply Replacement For The Yamaha Psr Ew400 Digital Piano Keyboard 16 V 2.4 A 45 W Adapter ($16.46)
Yamaha - MODX8+ , MOX6/8/f6 , PSR-EW400 - USB connector, ($6.90)
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