Snappy
There were two versions of the 586 ( the second being the .2) I believe the difference was that the .2 did DTS and the original didn't. I'm not sure if the original could be upgraded but as I recall I don't think it was because I think there were some other improvements in the .2 edition besides a simple DTS upgrade. Check with Meridian on the full story. As you may recall the first 800 DVD also did not do DTS and that was about the same time as the first 586. I hope for your sake it can be upgraded. JOE

My gear: Trinnov CI, 271, 8000.1(SEs), 7200.1 HC (SE), 320s, 3200s, Seaton F18 subs, MS200 (2nd zone), 218, 210.
Other: JVC RS-4100 projector, Lumagen Pro Radiance, Panamorph DCR anamorphic lens, Stewart G4 130 screen, Kaleidescape Strato K, Rvolution 4K player and Zapitti NAS, Oppo BDP-203,Roon Nucleus