M-Audio ProKeys Sono 61 Digital Piano
61-Key Portable Digital Piano with USB Audio Interface

Designed to bridge the gap between writing, performing and recording, the ProKeys Sono 61 portable digital piano with audio interface delivers everything that you need to make music whenever inspiration strikes. 61 semi-weighted, velocity-sensitive keys, advanced scanning technology and a stereo-sampled Steinway grand sound deliver an expressive piano experience. Additional instant-access sounds like electric piano, organ and clav—as well as a full onboard General MIDI sound set—round out a top-notch performance solution, with or without a computer.  Built-in M-Audio USB audio interface technology lets you record your keyboard performance, plus vocals and instruments, directly to your computer with the included software. The versatile ProKeys Sono 61 is ideal on stage, as the hub of your personal recording studio and in diverse educational settings.

M-Audio ProKeys Sono 61 Digital Piano Features:
-61-note, semi-weighted, velocity-sensitive keyboard 
-On-board, stereo-sampled Steinway premium piano sound and 4 other high-quality instruments—bright piano, electric piano, organ
  and clav 
-GM compatible with 128 on-board sounds plus drums and percussion 
-Reverb and chorus effects 
-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 
-Octave +/- 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)

M-Audio ProKeys Sono 61 Digital Piano Specifications:
-Sampling rate: 44.1kHz
-Bit depth: 16-bit

M-Audio ProKeys Sono 61 Digital Piano System Requirements*:
-Windows (SP2)**
  -Pentium III 1GHz or AMD K7 Athlon 1GHz  (CPU may need to be higher for laptops)
  -512MB RAM 
  -CD/DVD-ROM drive for installation
  -One native USB port
-Windows Vista 32-bit
  -Pentium III 1GHz or AMD K7 Athlon 1GHz  (CPU may need to be higher for laptops)
  -1GB RAM
  -128MB graphics card
  -CD/DVD-ROM drive for installation
  -One native USB port
-Mac 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

*M-Audio suggests checking the minimum system requirements of any third-party software, as they may be greater than the above specifications.
**Home and Professional Edition only. Windows Media Center Edition is not currently supported.
***G3/G4 accelerator cards are not supported.