do i get afan to keep it cool
that is up to you .
why not find out who builds this amp....contact them and ask if the amp is suppose to run hot ?
i personally wouldnt have bought a piece of equipment that is that cheap.....as if it breaks or something happens to it , are you able to get it fixed....and if so, where do you have to ship it to ? you will have more into it with shipping / repair than the unit is probably worth.