The Yamaha P45 is an 88-key digital piano with GHS (Graded Hammer Standard) weighted action, heavier in the low keys and lighter up top to mimic an acoustic. Its AWM stereo sampling gives a full, spacious piano tone, and it adds 10 voices, dual/layer modes and USB-to-host for computer connection. It suits beginners, students and home players who want a real weighted feel in a compact, portable body. Against rivals like the Roland FP-10 and Casio CDP-S, it wins on touch and piano sound but trails on polyphony (64 notes) and built-in practice features.
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Owners and reviewers consistently praise the P45's weighted touch and piano sound for the money, and many call it a strong first piano. Common complaints are the low polyphony, basic speakers and the lack of practice or connectivity features.
The Yamaha P45B is a digital piano with 88 weighted keys. It has a compact, lightweight body that is easy to carry and store. Its sound comes from Yamaha's Advanced Wave Memory (AWM) Stereo Sampling, which uses pairs of waveforms recorded with two microphones.
The keys use Graded Hammer Standard (GHS) weighted action. The touch is heavier in the lower keys and lighter in the higher keys, as on an acoustic piano. Keyboard sensitivity can be adjusted to suit your playing style.
It has 10 voices, including strings, organ and vibes, and 4 reverb types. Dual mode layers two voices. Duo mode splits the keyboard into two halves, each with its own middle C. Operation is controlled with a single button. ECO Operation powers the piano off after a period of inactivity to save energy.







