Now there's a compact, portable, USB bus powered MIDI solution,
perfect for your laptop. The Edirol SD-20 gives you the right number
of sounds, and works with your computer no matter what its age: you
can connect through USB or serial ports. And its compact size makes it
easy to connect and create anywhere.[align:left]
Main Features

• 
  
• 32-part, 64-voice polyphony


• Complete studio module including 32-part MIDI
  synthesizer and 64-voice polyphony for sequencing, karaoke, huge
  orchestrations and more….


• GM2/GS/XGlite 660 tones, 23 drum sets


• The standard GM2/GS/XGlite compatible sound
  selections provide a variety of music genres such as classical,
  contemporary, pop and beyond. Play the realistic instruments tones
  from Grand Pianos, Rippin’ Guitars, Jazzy Sax and Ethnic Drums!!
  


• Optical Digital Output (S/P DIF)


• Optical digital connection allows for exceptional
  MIDI sound quality output not found on any sound module in its
  price range.


• USB bus powered, adaptor free


• USB connection supplies power as well as data. The
  convenience of having all the mobile elements of music production.
  


• Easy connection to computer (Serial / USB)


• Legacy compatible with serial computers or simply
  connect through USB for Mac or PC

Internal Sounds

Tone Map: 3 (Classical, Contemporary, Solo)

Preset Sounds: 660

Drum sound sets: 23


Effects

Reverb

Chorus


Power Supply

DC 9 V (AC Adaptor)


Dimensions

203 (W) x 159 (D) x 35 (H) mm, 8 (W) x 6-5/16 (D) x 1-7/16 (H)
inches


Weight

0.4 kg/15 oz


Includes

USB Cable, Owner's manual, SD-20 driver CD-ROM, AC Adaptor