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The ProKeys Sono 88 portable digital piano with audio interface lets keyboard players and songwriters bridge the gap between writing, recording and performing. 88 semi-weighted, velocity-sensitive keys, advanced keybed scanning technology and a stereo-sampled Steinway grand sound deliver an incredibly expressive piano experience. Six additional instant-access instruments and 128 on-board General MIDI sounds round out a premium performance solution that can be used with or without a computer.* In the studio, the keyboard’s built-in USB audio interface makes it easy to record your performance—plus vocals and instruments—directly to the computer with the included software. ProKeys Sono 88 provides an intuitive and seamless experience from start to finish, whether you’re jamming live, creating professional-quality recordings or teaching music. Top Features portable digital piano with integral audio interface > all-in-one music-making solution 88 semi-weighted, velocity-sensitive keys > exceptional feel and playability 7 high-quality built-in sounds > instant access to piano, clav, strings and more line and microphone inputs > record vocals and instruments includes on-board General MIDI sound set > 128 total sounds plus drums and percussion Full Features 88-note, semi-weighted, velocity-sensitive keyboard on-board, stereo-sampled Steinway premium piano sound 6 other high-quality instruments—bright piano, electric piano, organ, clav, strings, choir GM compatible with 128 on-board sounds, plus drums and percussion reverb and chorus effects layer mode 40-note (maximum) polyphony built-in USB audio interface 2-in/2-out audio interface 16-bit/44.1kHz (CD-quality) audio XLR microphone, 1/4" instrument and RCA inputs 1/4" jacks for stereo line output dual front-mounted headphone jacks hardware direct monitoring assignable modulation wheel and voice volume control pitch bend wheel transpose +/- buttons assignable to alter octave, transpose, program, Bank LSB, Bank MSB, MIDI channel or master tune Edit Mode button for advanced MIDI functionality MIDI Out from USB mode allows the keyboard to be used as a MIDI interface connection and power via USB bus class-compliant MIDI requires no additional drivers includes low-latency drivers for optimal audio performance DC power socket sustain pedal jack MIDI Out jack On/Off switch Piano Reset button restores all settings to piano sound (default state) Compatibility MME Mac OS X Core MIDI Minimum System Requirements (PC) Windows XP (SP2)* Pentium III 1GHz or AMD K7 Athlon 1GHz (CPU may be higher for laptops) 512MB RAM CD/DVD-ROM drive for installation One native USB port *Home and Professional Edition only. Windows Media Center Edition is not currently supported. Windows Vista 32-bit Pentium III 1GHz or AMD K7 Athlon 1GHz (CPU may be higher for laptops) 1GB RAM 128MB graphics card CD/DVD-ROM drive for installation One native USB port Minimum System Requirements (Mac) Macintosh G4 1GHz* OS X 10.3.9 with 512MB RAM OS X 10.4.9 with 512MB RAM One native USB port CD/DVD-ROM Drive for Installation *G3/G4 accelerator cards are not supported. Note: M-Audio suggests checking the minimum system requirements of any third-party software, as they may be greater than the above specifications. Specifications sampling rate: 44.1kHz bit depth: 16-bit