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
Yamaha MX88 – Thomann UK
Yamaha MX88 88-key Weighted Action Music Synthesizer | Sweetwater
MX88 - Overview - Synthesizers - Synthesizers & Music Production Tools - Products - Yamaha - Music - Australia