Dag man - I didn't know there was a response to this post!!
The thing with the sliders are are Niche Automation Stations. They are heavy duty built midi faders from the early 2000's. Quite sophisticated, but obsolete these days since I now use my DM4800 for those tasks.
Very nice setup Jamsire, i would feel at home in there with all that midi gear..lol. Softsynths has come a long way since the 90s but i still go to my korg, rolands and emu sound module for bread and butter sounds like pianos, bass, kicks and snares.