The Yamaha P-105 features an 88-note, Graded Hammer Standard weighted action keyboard to give you the same feel as an acoustic piano - heavier in the low end and lighter in the top. It has Yamaha's PureCF sound engine which accurately recreates the sound of their famous CFIIIS concert grand piano. Also new, the USB to Host port and line-level AUX outputs allow a variety of connectivity options with everything from an amplifier to an iPad. And 128-note polyphony ensures the suppression of dropped notes even with simultaneous Dual, Split, and drum pattern playing. In the EQ department, Intelligent Acoustic Control provides full, balanced sound that adapts to your volume setting for the best possible tone at any level. PureCF-Sampled Piano Sampled from Yamaha's own acclaimed CFIII concert grand, no digital piano in this price range delivers recordings from such a high-end instrument. Pianist styles This built-in duet partner plays along with you in one of ten different playing styles. Built-in Drum Patterns Basic drum patterns put the "fun" back into practicing and is a practical alternative to a metronome. Or turn your solo act into a two piece band where the dummer is always on time. 128-Note Polyphony Even when using dual Voice and split mode with a drum pattern, 128-note polyphony ensures every note gets heard. Intelligent Acoustic Control Optimized for the built-in, 2-way, stereo speaker system, the P105 EQ automatically adjusts to your volume setting to ensure the absolute best tone at any playing level. Assignable Split Voice Choose two Voices and assign them to either the right or left hand. This is more musically versatile compared to a single, pre-assigned, left-hand bass Voice.