Yamaha P155 digital piano: Complete specifications and gallery 1

If you want the lowdown on Yamaha’s new portable digital piano, the P155, then look no further. Here are complete specifications, pictures, and comparison with Yamaha’s earlier P series instruments.


  • The Yamaha P155 features samples taken directly from the CFIIIS 9-foot grand piano
  • Uses Yamaha’s Pure CF sampling technology with minimal audio post-processing
  • Dynamic Stereo Sampling (DSS) technology features 4-level piano sample
  • Key off and open strings samples
  • Graded Hammer technology – lower keys are heavier
  • 128 note polyphony
  • 12W x 2 speakers

Detailed Specifications

P155 Specifications
Keyboard 88 keys, Graded Hammer (GH)
Tone Generation 4-level AWM Dynamic Stereo Sampling
Pure CF Sampling YES
Key-Off Sampling/Stereo Sustain Sampling YES
Damper Resonance YES
Polyphony (Max.) 128
Voices 17
Reverb 4 types
Brilliance 3 types
Effect 4 types
Dual YES
Split YES
Metronome YES
Tuning/Transpose YES
Scale Tuning Types 7 types
Song Recording 2-track recording/playback, 3 User Song
Preset Songs 7 Demo Songs, 50 Piano Preset Songs
Jacks & Connectors
Headphones 2 (stereo 1/4″ jack)
Pedals Sustain Pedal, AUX Pedal
AUX OUT (Variable) L/L+R, R (1/4″ jack)
USB TO DEVICE YES (song data storage)
Amplifiers 12W x 2
Speakers (12 x 6) cm x 2
Dimensions (W x D x H) 52-1/2″ x 16-13/16″ x 5-1/2″
Weight 18.6 kg (41 lbs.)
Colors P-155: Black with Mahogany top-board
P-155B: Black with Ebony top-board
P-155S: Silver with Cherry top-board



  • Step up in (doubling) polyphony from P140 / P120
  • Return to P120’s variable output level 1/4″ audio jacks
  • USB output options
  • More scale tunings available
  • More advanced sampling

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