"Yamaha's most impressive digital instrument ever" (http://www.emusician.com/news/0766/yamaha-a5000/140334) This unit has always been inside a rack in my personal smoke-free studio. 128 Meg RAM, 2 internal HD (one 2 GIG SCSI + one ?? GIG IDE). Rest fo the specs is: -32 multi-timbral parts -126 notes of polyphony. -Comprehensive effects. Can be used as a highly advanced digital multi-effect standalone processor. -Four analogue outputs (expandable to 10 with the AIEB1 board that also features S/PDIF digital I/O) -Synthesis facilities, looping, editing and DSP tools. -SCSI connection for an external drive like a CD-burner or Zip/Jazz drive -Standard MIDI File playback sequencer -Real-time MIDI controller knobs -Nine Yamaha-format discs of samples, one general (covering various instruments) and eight themed, are supplied. The latter feature Strings/Choir, Piano/Keyboards, Brass/Wind Instruments, World/Latin instruments, Guitar/Bass, Real Drums, and 'Syntraxx'/Loops, plus a 'DJ/Producer Toolkit'. Big selection of these samples have already been copied to the 2 internal hard disks. -It also reads Akai S1000/3000, Emu EIIIx, Roland S760, WAV and AIFF samples, plus some Yamaha synth voice/wave data, and can save in WAV or AIFF as well as native format. Average price of a used unit without RAM, neither HD is US $544 as you can read in http://www.prepal.com/data/Yamaha.htm Another review here: http://www.soundonsound.com/sos/apr00/articles/yamahaa5000.htm Reason for sale: I don't have the time to use it anymore, otherwise I would keep this incredible and highly versatile instrument. Price is negotiable.