Nautilus uses 8 amps, yes... Most of the forum discussions are filled with positive remarks, but let me jot a few weaknesses of my system (I have been upgrading as we speak)
1. Nautilus is extremely difficult speakers to set up. Your room has to be in tuned or else you won't get the full benefit. I found 800D to have a much better resoluton. Mac is not a good match.. It's more of a sculpture than speakers if you ask me... nice to look at.
2. Stradi requires a lot of power. I am amazed at how much this baby eats up the power. i need to change it to VAC to BAT. Krell Evolution is another set I am trying this week. The current version is the anniversary version (Palladio) a bit lower base, but not much of difference and about 10K more... Ouch!