The original built-in amplifier simulation was mediocre. The UPD version includes convolution IRs (Impulse Responses) of genuine Fender Twin Reverb, Roland Jazz Chorus, and a vintage Wurlitzer 200A amp. This saves you from having to route the piano to Guitar Rig or Amplitube.
Simulates the mechanical sound of the damper and sustain pedal, adding to the "live" atmosphere. Long Release Function: Ultimate Stage Pianos Hd Kontakt UPD Download