Yamaha MX88 (MX61 | MX49) review: The Best First Workstation?
Used Yamaha MX 88 MUSIC SYNTHESIZER Keyboards 88-key Keyboards
Yamaha MX88 88-key Weighted Action Music Synthesizer | Sweetwater
Yamaha MX88 88 Key Weighted Action Synthesizer Yamaha Portable Keyboards PIANO TOUCHThe MX88 features a Graded Hammer Standard (GHS) weighted action. GHS weighted action has a heavier response in the low keys