Hello Don,
Yes, I’ve been using the PA800 for about 7-8 months with the midi accordion and at times with a Master Pro 2000, 120 bass midi machine midi’d to the 800. I have the Limex midi and mic system in 2 of my boxes. The PA800 does everything I need. I also use the XP for smaller venues and gigs under 2 hours - thanks to Dave’s patience and help. I don’t know about the CIAO midi interface, but the Limex works fine. Good luck. I think you’ll really like the PA800. Let us know how you make out.
Ciao, Jerry