My New Ketron SD90 will be delivered to me on Wednesday this week. I will post updates about the SD90 in this thread and try to answer any questions asked here about the SD90. I loaded up the SD90 with all 3 Gold Packages, the AMAMSONIC package, and added a 120 gig SSD drive to it. So to get started:
1. I will use the SD90 with my Roland A-800 Pro 61 key midi keyboard.
2. On gigs I will be using a single Bose L1 Compact speaker.
3. I will experiment with using all my song setups from my Ketron SD7 which I owned for about 3 years.
4. It will be interesting to see if the SD90 can be controlled using the buttons and sliders
on the A-800 Pro keyboard. (I don't know how to make this happen yet)

>>>:- Yes ... if the A-800 can transmit SysEx codes, then simply enter in the required code (found in the SD90 Data tables) into each of the slidder or knobs on the Roland which you want to use to control the SD90!)

Stay tuned for my personal evaluation and experience with the SD90.

Deane