The Roland Lucina AX-09 synthesizer is compact, lightweight, and loaded with great sounds that are all easily selectable with the onboard Category buttons. Plug in a USB stick and add backing tracks to your performances with the Audio Player function or plug in an MP3/CD player and jam along with your favorite songs. This ultra-light Roland keyboard synth is designed to fit all musicians—even kids. It's super easy to use yet it packs a heavyweight musical punch with its stellar sounds and expressive controls. Great sounds: The Lucina synthesizer is packed with dozens of high-quality sounds that span a wide stylistic range from scorching synth leads to silk-smooth drum pads. Find the perfect sound quickly with the Category buttons or press the Preview button to hear the currently selected sound with a pre-programmed riff. Assign your top 12 sounds to the Roland keyboard's Favorites bank for instant, one-button recall. Volume and reverb-level settings can be stored with each Favorite. Battery power: Plug into traditional power with an AC adaptor (included) or roam free with batteries. Jam for hours (approximately four hours of continuous use per 8-battery load) with eight standard AA batteries installed (Ni-MH AA rechargeable batteries). A battery-strength indicator lets you know when battery power is getting low so you never miss a note onstage. Audio player: The built-in Audio Player feature lets you sound like an entire band. Simply load up a USB stick with your favorite songs in MP3, WAV, or AIFF format and plug it into Roland Lucina AX-09's USB port. Select the song you want, press Play, and jam along! Hands-on control: Put a personal stamp on your performances with the expressive controllers built into the Lucina synthesizer. Wave your hands over the invisible D Beam for dramatic effects and dig your fingers into Roland's Modulation Bar and Touch control to bend, twist, and sculpt each sound you play.