The rating for the speaker isn’t really anything more than a recommendation. In general the highest quality amp you can afford, more power is better. Since we are talking about a very budget oriented speakers, I am assuming your are not expecting to spend a lot. You might have a look at Schiit amps. They are very good audio components for the money. If you are new to this pursuit... yes, Schiit.
What is the rest of your system?