This is a very simple amp stand.
You will need two pieces of wood 210x297mm (that’s the dimensions of A4 paper), three dowels (their length depends on how big your amp is), a hacksaw and a drill.
You will cut a triangle from its piece of wood and find some other use for it because we don’t need it.
Then you will need to drill three, I repeat, three holes. Not four holes, neither five; six is out of the question. Three will be the number of the holes that need to be drilled.