The Yamaha PSR-9000 is a professional-level 61-key arranger workstation keyboard released in 2000. Here are some of its key specifications:
Keyboard: 61 keys with velocity and aftertouch.
Polyphony: 126-note polyphony.
Voices: 331 original voices and 480 XG voices, including 14 drum kits and 2 SFX kits. It features 32 MB of internal voice memory.
Sequencer: Dedicated 16-track sequencer with a capacity of 38,000 notes.
Storage & Expansion: Sampling RAM expandable up to 65 MB using SIMMs.
Support for an internal hard disk up to 8 GB.
SCSI terminal for external storage devices.
Direct disk playback capability.
