With Yamaha YPT410, the music keyboard evolves from the common to the rare. Whether you use it traditionally or through a PC or Macintosh, your creative potentials rise to new heights. The YPT410 combines traditional learning tools with hands-on performance features like Pitch Bend Wheel for authentic playing of guitar and horn sounds, Control Knobs that allow you to have real time control over filters, effects, EQ, tempo and an arpeggio function for techno and synthesizer keyboard playing that can automatically add the playing of notes in rapid succession in ascending and descending fashion. These are easy to use professional features that set this keyboard apart from others in its class. It comes with 30 built-in songs plus 70 more on an included CD-ROM and an interactive lesson system, divided into left and right hand parts, for learning them. In addition, you have the ability to connect to a computer via USB, download more songs from the Internet into the internal Flash ROM (PC only), and use all of the Yamaha Education Suite features to help you learn to play them. Yamaha makes it easy to get connected with the new PC button. There are many other tools on this YPT-410 keyboard that make it easy to be a power user from the first day you use it. Most of all, it's a musical instrument you can grow with. Reverb - 9 Types Chorus - 4 Types Equalizer - Preset Master EQ x 5 Auto Harmony - 26 Types Demo mode 2 two-way speakers are built-in with 2.5 watts per channel output x 2 channels Includes AC Adapter (PA3C) Optional portable use available with the purchase of 6 D batteries Can transfer with Windows PC and Macintosh computers Unit Dimensions - Width 952mm (37-1/2) x Depth 388mm (15-1/4) x Height 146mm (5-3/4); Weight - 7.0kg (15 lbs., 7 oz.) (not including batteries)