Like the GP-500, the GP-300 also reproduces the finest nuances of the world's most famous grand pianos. The high-quality amplifier system with six speakers also creates a complex sound like that known only from acoustic grand pianos. Features such as 26 sounds, Concert Play function and Hall Simulator leave almost nothing to be desired for ambitious piano playing. Function GP-300 Keyboard Number of keys 88 Layer/Split Yes/Yes Duet Adjustable tone range (-2 to +2 octaves) Transpose 2 octaves (-12 to 0 to +12) Octave Shift 4 octaves (-2 to 0 to +2) Sound Source Number of tones 26 Maximum polyphony 256 Touch response 3 sensitivity levels, off Tuning 415.5 Hz to 440.0 Hz to 465.9 Hz Temperament 17 types Stretch Tuning 5 types, off, auto setting Acoustic Simulator Damper resonance Yes Damper noise Yes Hammer response Yes String resonance Yes Lid Simulator Yes Effects Types Brilliance Yes (-3 to 0 to + 3) Hall Simulator 12 types Chorus 4 types DSP Yes Headphone mode Yes Volume Sync Equalizer 3 types, off Concert Play Number of songs 15 Song volume Adjustable Modes 2, LISTEN + PLAY Music Library Number of songs 60 User Songs 10 (up to approximately 90KB per song, approximately 900 KB for 10 songs) Song volume Adjustable Part On/Off L/R Grand Piano Demo Song Number of songs 6 MIDI Recorder Functions Real-time recording, playback Number of songs 1 Number of tracks 2 Capacity Approximately 5.000 notes total Recorded data protection Built-in flash memory Volume level Adjustable Audio Recorder Function Real-time recording and playback to USB flash drive Number of songs Max. 99 songs, approximately 25 min/song (44.1 kHz, stereo, .WAV format) Volume level Adjustable Metronome Beats 0 to 9 Tempo range 20 to 255 Volume level Adjustable Pedals Damper Yes, with half-pedal function Soft Yes Sostenuto Yes MIDI 16-channel multi-timbre receive USB Flash Drive Capacity 32 GB More functions Setting backup, operation lock Display LCD with backlight Inputs/Outputs Phones Stereo standard jacks x 2 Line OUT (L / MONO, R), standard jacks x 2 Line IN (L / MONO, R), standard jacks x 2 MIDI In/Out USB Port Type B USB Flash Drive Port Type A Pedal connector Yes Speakers Size 16 cm x 2 + (10 cm + 5 cm) × 2 Output 30 W x 2 + 20 W x 2 Volume Sync Equalizer 3 types, off Power Requirements AC adaptor AD-E24500LW Auto power off Approximately 4 hours after last operation Dimensions B x T x H 143,4 x 48,9 x 96,3 cm Weight 77,5 kg Accessories included AC adapter , score book, music stand