Heya,
Your speakers are pretty efficient, so really, it comes down to room size and room response. You may find you don't need gobs of current for these and so buying a power amp may provide no benefit from the power stand point except for having purchased a lot of headroom you won't use or need, and instead, simply get a "different" sound strictly from the quality of the amplifer itself (but may or may not be an audible thing where the changes occur for you; as most of what you're actually hearing is the room response, not the quality of the components of your electronics so much).
The A-300 is a solid stereo amp. 150 watts is more than what most people need outside of a huge room for loudspeakers. Their prices are this way due to being an internet direct company. They're not top shelf, they're bargain, but they're better than the cheaper stuff. Nothing wrong with Emotiva. Just be mindful of warranty and all that. A lot of companies are not the same right now as they were pre-2020 if you care about service and all that. Not saying Emotiva is not good in that regard; I enjoy my Emotiva equipment and I've not had a bad experience with service. But this applies to any company.
Any alternatives you're considering?
Budget?
Room size?
Very best,