The z10000 is a professional keyboard/synth with powerful features and high quality sound allow you to become a one person conductor, composer, arranger and band leader. The Z-1000 was a dream concept of “Joe Despres", now deceased. Joe was a professional keyboard player. He wanted a keyboard he could convert to any other keyboard by altering the unit to take the maintainence disc of other pro-line keyboards such as Korg M-1. That is what the Z-1000 does. You insert the service disc it removes all existing data then you add the maintanence disc and download the other keyboard such as Korg, Soltron, Yamaha PSR and so on. There are 6 keyboards on already downloaded into the service disk which takes only seconds to switch over. Fully working and Includes Keyboard, ac adaptor, service disk, additional master styles, footpedal, phillips headphones and owners manuals. Some additional keyboard music is included. 61 weighted keys with velocity. 200+ 11 drum kits, GM compatible, 16 bit PCM sampling. 120 ROM styles, Style creator/editor. Sequencer: 16 tracks 40,000 notes. Real time and step recording. Effects: Reverb processor with 3 algorithms, 2 multi effect processors with each rotary speaker, 5 delays, autopan, chorus,