Many of the Yam Live voices are comprised of apparently similar samples arranged in pairs- one panned hard left the other hard right. I can't prove they're the same or mono but I wouldn't be surprised if they were as IMO the stereo presence doesn't really seem to be there much- maybe I'm just becoming acclimatised-lol!

Hi Scott - it's possible to get a much better stereo effect using the PC editing facility available with Ty2. Here's a .tvn hot off the press using the Ty2 LiveGrand where hi notes come from right & lo notes come from left. Hopefully it's a general improvement too. It's also possible to adjust brightness/mellow to taste using the mod wheel so it should have wider appeal than the usual "fixed" piano - that is assuming it has any appeal whatsoever- lol!
Any Ty2 users welcome to try.

http://tinyurl.com/34flrr

John