The extremely well reviewed Drop + THX AAA 789 amp is on sale this weekend. If I didn't already have a Schiit Asgard 3 I would jump on this. The 789 is a balanced (sort of) amp that supposedly has lots of power, clean sound and very low distortion.
It was originally $399 but has been $299 for a while now, so $199 is pretty amazing price. Sale ends on Monday (September 20th).