Then better get the Active ones of Alesis, then you don't need an amplifier.
But the best way is go to a shop, take some music with you and listen to it on a couple of sets.
I think every monitor someone advice you, someone else will say it is crap.
If you would search on the Alesis speakers, so will read so much bad things, but also a lot of people who find them perfect.
The best way is to listen to your recordings on multiple soundsystems, in that way you could notice if your monitors might have a little bit to much bass or something and you could adjust it. So you learn how you must listen to your monitor speakers. They are not perfect mostly. Especially the cheap ones.
I did all my recordings on crappy old normal JVC cheap customer lofi speakers. I now have Alesis M1 Active MK2, but nothing I recorded with that speakers is released if I remember right.