From what I know... the guy typically plays super overdriven Marshalls with JB pup loaded ESP's. Whether that was used on end of an era I don't know, thats the typical type setup though.
However, in their official, video, blog you can clearly see Bogner extacy next to Mesa, now I know the true source of such defined lows, I couldn't figure it out how could it be Mesa, but I guess we know now.... http://fanblog.nightwish.com/main.site?action=siteupdate/view&id=2