Casio AP-750 vs Yamaha YDP-S55

Casio AP-750Yamaha YDP-S55
Key actionSmart Hybrid Hammer Action Keyboard Celviano Edition: fine-grained Austrian spruce wooden keys with simulated ebony and ivory keytopsGH3 (Graded Hammer 3) keyboard with synthetic ebony and ivory keytops
Polyphony256192
Sounds / presets3910
Sound engineAiR Grand Sound SourceYamaha CFX Sampling with VRM Lite (damper resonance and string resonance), key-off samples and Smooth Release
EffectsHall Simulator 8 / Reverb 8, Surround 3, Chorus 12, Brilliance, Acoustic Simulator (Key Off Simulator, String/Damper/Open String/Aliquot Resonance, Lid Simulator), Headphone Mode4 reverb types, Intelligent Acoustic Control (IAC) and Stereophonic Optimizer
Speakers40 W40 W
BluetoothYesNo
USB audioNoYes
Pads / fadersnono
Weight53.6 kg40 kg
Dimensions (W×D×H)[1401, 929, 440] mm[1353, 309, 792] mm
Battery powerno (AC only per official spec table)no
Released20242022
Statuscurrentcurrent
Keys8888
Pedals—3 pedals: damper (half-pedal), sostenuto, soft
Key Cover—folding

Which one should you buy?

Full spec sheets: Casio AP-750 · Yamaha YDP-S55. Rows with a highlighted background differ.