I think the nu vista would easily power the 802s.I have powered much more difficult loads very easily to extremely loud levels with that amp. Oh and BTW the nu vista puts out 310 watts a channel so its more than those monoblocks!!! It should not be an issue as to whether or not it will power them. I would, however, change to different speaker like dynaudio confidence 5s. I have listened to the two extensively and there is no difference which is better. Guess which ones i bought..... There are many other better speakers in the 5k used range than the 802s and the nu vista can power anything out there so there is unlimited choice. I would change manufacturers. I hope this helps, but somehow i dont think you will consider other speakers...