A post at the Musiker-Board was created by a user who was kind enough to do exhaustive research on the actions of various pro keyboards and digital pianos and share with the world. I have always been obsessed with the actions of keyboards and how natural they feel to me when playing different styles. I have always liked Fatar actions and specifically the Fatar TP/9PIANO (aka TP/9P) in my Studiologic Numa Compact purchased earlier this year at B&H Photo & Video.
My latest addition to my keyboard arsenal, the Kurzweil PC3LE6, apparently has the Fatar TP/8PIANO action installed in it. Though the action is a decent and sturdy product, I am finding it a little tightly sprung for my needs. I am hoping to find a way to replace the action with the Fatar TP/9PIANO (aka TP/9P) like my Studiologic Numa Compact or get a retrofit (apparently discontinued 8-27-2017) sold by Syntaur which appears to be currently unavailable.
UPDATE: In January 2015 I purchased a Kurzweil SP4-7 and sold my Kurzweil PC3LE6. I was really hating the PC3LE6 action. I am LOVING the Kurzweil SP4-7 which has the Medeli KB76FPU action in it – lightly weighted without the overly-sprung, spongy feel of the PC3LE6 action (Fatar TP/8PIANO). To me the Medeli KB76FPU feels very similar to the Fatar TP/9PIANO (aka TP/9P) in my Studiologic Numa Compact. I have never been a huge fan of the weighted actions in any digital pianos, keyboards, or workstations. No matter how well they are made I always feel on the fence about them though some are really quite good. No offense to those that love them. This is just a personal preference as I can play more fluidly on the SP4-7 than on any weighted action keyboard whether I am playing piano, organ, synth or orchestral parts.
The Kurzweil PC3K6 apparently has a TP/9S action in it but the specs at Kurzweil don’t specify whether it is the Fatar TP/9S unweighted or weighted though the post says they ARE weighted. By looking at the PC3K6 picture, it obviously does NOT have the organ “waterfall” or piano type keys.
UPDATE 6/5/18: I have edited and updated the copy and paste from the original post dated 5/2/11. Also the original post at Musiker-Board has been extensively updated. Tons of valuable information.
Doepfer
LMK4 + (88) (production until 04/2011): Fatar TP/10MDR
LMK4 + (88) (production from 04/2011): Fatar TP/40GH
LMK2 + (88) (production until 04/2011): Fatar TP/10MDR
LMK2 + (88) (production from 04/2011): Fatar TP/40GH
PK88: Fatar TP/40GH
Generalmusic (GEM)
Promega 2+: Fatar TP/40GH (according to Sound On Sound article)
Pro 1/2 (88): Fatar TP/20
Promega 2/3 (88): Fatar TP/30 (slightly adapted and lighter weight than the Pro 1/2)
Kawai
K5000 (S and W): Fatar TP/8S
Korg
N264 (76): Fatar TP/9S
N364 (61): Fatar TP/9S
X5D (61): Fatar TP/7BA
Kronos (73/88): Korg RH3
SV-1: Korg RH3
Kurzweil
PC3K8 (88): Fatar TP/40L
PC3K7 (76): Fatar TP/8
PC3K6 (61): Fatar TP/9S weighted
PC3X (88): Fatar TP/40L
PC3 (76): Fatar TP/8
PC361 (61): Fatar TP/9S weighted
PC3LE8 (88): Fatar TP/40L
PC3LE7 (76): Fatar TP/8PIANO
PC3LE6 (61): Fatar TP/8PIANO
SP4-8 (88): Fatar TP/100
SP4-7 (76): Medeli KB76FPU
SP76 (76): Fatar TP/8
K2000: (61) Fatar TP/9S weighted
K2500 (76): Fatar TP/8
K2500X (88): Fatar TP/10
K2600 (76): Fatar TP/8
K2600X (88): Fatar TP/10MDF
K2661 (61): Fatar TP/9S weighted
PC1X (88): Fatar TP/30
PC2X (88): Fatar TP/10MDF
PC88 (88): Fatar TP/10MD
Nord
Stage 2 EX Compact: Fatar (unknown model but Nord refers to it as “Semi Weighted Waterfall (SW)”)
Stage 2 EX 88: Fatar TP/40M
Stage 3 Compact: Fatar (unknown model but Nord refers to it as “Hammer Action Portable (HP)”)
Stage 3 HP76: Fatar TP/100
Stage 3 88: Fatar (unknown model but Nord refers to it as “Hammer Action (HA).” Possibly TP/40H)
Piano 3: Fatar TP/40GH or TP/40H
Electro 4 SW73: Fatar (unknown model but Nord refers to it as “Semi Weighted Waterfall (SW)”)
Electro 4 HP: Fatar (unknown model but Nord refers to it as “Hammer Action Portable (HP)”)
Electro 5 HP: Fatar (unknown model but Nord refers to it as “Hammer Action Portable (HP)”)
Novation
Impulse: Most likely Fatar but not specified on their website. Very nice feel though the longest key-bed available is 61 keys
Radikal Technologies
Accelerator: Fatar TP/8S
Studiologic
Acuna (88): Fatar TP/100LR
Numa Compact: Fatar TP/9PIANO (aka TP/9P)
Numa Compact 2: Fatar TP/9PIANO (aka TP/9P)
Numa Compact 2x: Fatar TP/9PIANO (aka TP/9P)
Acuna (88): Fatar TP/100LR
Sledge: Fatar TP/9S, unweighted
Numa (88): Fatar TP/40WOOD
Numa Nano (88): Fatar TP/100LR
Numa Nero (88): Fatar TP/40WOOD
Numa Piano (88): Fatar TP/100
SL88 Grand: Fatar TP/40WOOD
SL88 Studio: Fatar TP/100LR
SL990 PRO (88): Fatar TP/40GH
SL990 XP (88): Fatar TP/40GH
VMK-149 Plus (49): Fatar TP/8PIANO
VMK-161 Plus (61): Fatar TP/40M
VMK-176 Plus (76): Fatar TP/40M
VMK-188 Plus (88): Fatar TP/40GH
VMK-88 Plus (88): Fatar TP/9PIANO (aka TP/9P)
Waldorf
Blofeld Keyboard: Fatar TP/9S unweighted
Waldorf Wave (61): Fatar TP/8S
Zarenbourg: Fatar TP/100
Viscount
Physis Piano H1: PGK Physis Grand Keyboard (formerly TP/40WOOD with “Ivory Feel” and 3 sensors)
Physis Piano K4: Fatar TP/40L
Physis Piano K4 EX: Fatar TP/40L
Physis Piano K4-EX GW: Fatar TP/40WOOD (with “Ivory Feel” and 3 sensors)
Physis Piano K5: Fatar TP/100LR
Physis Piano K5 EX: Fatar TP/100LR
Wersi
Pegasus: Fatar TP/8S
Yamaha
Yamaha CP1: NW Stage
Yamaha CP5: NW Stage
Yamaha CP50: GH
Yamaha CP33: GH
Yamaha CP300: GH
Yamaha KX-8: GHS
Yamaha MO8: BHE
Yamaha MOX8: GHS
Yamaha MOTIF XF8: BHE
Yamaha MM8: GHS
Yamaha P35: GHS
Yamaha P95: GHS
Yamaha P105: GHS
Yamaha P155: GH
Yamaha S90XS: BHE
Yamaha S90ES: BHE