The Williams Allegro IV portable digital piano provides the sound and feel of a concert grand piano combined with advanced Bluetooth technology to help players learn and practice. Twelve different instrument types are fed to a studio-style speaker system for a high-quality, room-filling sound. It’s equally ideal for beginners practicing for their first recital or experienced musicians playing a symphony performance. The Allegro IV digital piano will inspire a lifetime of music. It all begins with Williams' stereo grand piano sound, recorded in stereo from a famous Italian concert grand to capture the full dynamics and bass response of the instrument. Vintage electric pianos, organs, synthesizer, bass are also included. Strings, choir and more can be layered or split on the keyboard for an even fuller arrangement. The graded, hammer-weighted keyboard offers authentic piano response and complete control of your performance. For an even fuller piano experience, add the Williams optional wooden stand and triple-pedal accessories. The Allegro IV's speaker system is unlike any other compact piano. Its large, ported speaker cabinets with DSP technology provide a rich bass response that delivers a professional-quality sound beyond most portable pianos. Dual drivers, a powerful amplifier and DSP tuning make the Allegro IV one of the best-sounding digital pianos in its class, delivering the high-fidelity sound and full sonic range of a grand piano. Bluetooth Audio and an AUX input allow you to play along with videos, music or apps, either through the speaker system or headphones. There's also Bluetooth MIDI for use with apps, and a built-in USB audio/MIDI interface for recording with a computer. Williams’ free iOS app allows you to customize the sound of the piano and effects, play along with your music library, and more. A 90-day trial for Skoove interactive piano lessons is also included.