Thanks to Marcus on the PSR Tutorial site for this great chart: unfortunately, when copied the columns don't line up wel. The chart is best viewed at
http://www.psrtutorial.com/forum/index.php?topic=22447.0 Main Feature Comparison Chart
Tyros 5. Tyros 4. Tyros 3. Tyros 2. Tyros 1. S950
Keyboard. 61/76. 61. 61. 61. 61. 61.
Type. FSX. FSX. AEM. AWM. AWM. AWM
Polyphony. 128. 128. 128. 128. 128. 128
Voices 1279. 993. 749. 504. 403. 786
40 OrganWorld 30 Organ 20 Organ 10 Organ 10 Organ 20 Organ
Ensemble 55
S. Articulation 288. 164. 53. 42. NA. 62
S. Art. 2. 44. 15. 11. NA. NA. NA
MegaVoice. 54. 43. 23. 18. 10. 23
Live! 138. 101. 70. 58. 7. 39
Cool! 81. 71. 58. 39. 4. 64
Sweet! 37. 30. 26. 23. 9. 27
Drumkits. 37 audio. 44. 35. 28. 35. 25 audio
Styles. 539. 500. 450. 400. 300. 408
40 audio 25 audio
Opt. Memory. Flash. Flash. DIMMS DIMMS. NA. Expansion
Max. 1024 MB. 1024 MB 1024 MB 1024 MB. Pack 64 MB