Yamaha AvantGrand N3X vs Yamaha P-121

Yamaha AvantGrand N3XYamaha P-121
Key actionSpecialized Grand Piano Action (real grand action, non-contact optical fiber sensors, Ivorite key surfaces)Graded hammer standard (GHS) keyboard with matte finish on black keys
Polyphony256192
Sounds / presets1024
Sound engineSpatial Acoustic Sampling (CFX, binaural), Virtual Resonance Modeling (VRM), Soundboard ResonatorPure CF Sound Engine with damper resonance, Intelligent Acoustic Control (IAC) and Sound Boost
EffectsReverb, Brilliance 5, Intelligent Acoustic Control, Stereophonic Optimizer, Tactile Response System (TRS)4 reverb types, Intelligent Acoustic Control (IAC), Sound Boost, Table EQ
Speakers615 W14 W
Bluetooth—No
USB audioNoNo
Pads / fadersnono
Weight199 kg10 kg
Dimensions (W×D×H)[1481, 1014, 1195] mm[1114, 295, 166] mm
Battery powernono
Released20172018
Statuslegacylegacy
Keys8873

Which one should you buy?

Full spec sheets: Yamaha AvantGrand N3X · Yamaha P-121. Rows with a highlighted background differ.