The processing of the lamps is ok. The light output really good.
Who is sensitive to noise should take note here, which can be heard a high-frequency whistle (in ungedimmtem state). The greater 1m no longer to hear from me in the distance. To have but who plans this lamps placed as a workplace lamps closer to the head could be so unglückllich.
I have still the warm white version (2700K) fetched. The whistles and not the light is clearly suitable for the living area.