The amp you link to is less than 10 watts x2 into those speakers so it will be lower than they were designed for.
If you are trying for the lowest price a used integrated amp or stereo receiver will be much more powerful. Try to go for 35-50 watts per channel minimum. Lots of old school audio gear on Craigslist. An old AV receiver without HDMI would work fine too and might be cheaper but make sure to get the remote so you can configure it correctly.