After I had prepared everything as far as (lamps mounted, etc.), I realized that unfortunately the mounting hardware (screws / fittings for transformer, clamps, etc.) are missing. Amazon was very friendly / helpful, but I got the item returned.
The quality is not convincing for the reduced rate, the surface treatment is done very sloppy what consequence does all full of glitter is after having the lamp heads mounted on the cable adapter.
The transformer is huge, how loud it but I can not say!