Super for installation in a ceiling lamp - sums? - Yes and no!

First, I'll go on a the buzz:
All in all a super product - Unfortunately, I have to agree with some other reviews. By connecting the transformer to 230V without a consumer actually humming a little louder - you close however consumptions of approximately 15W the buzz is quieter - if you followed a total consumptions 27W as in my case - can be heard only the hum if you puts his ear directly to the transformer - switched to the transformer is not a buzz from logically heard. So I guess that does not use the other reviews the full load of the transformer and thus he hums so loud. A disorder of my W-Lan's (5GHz) or FM radio I could not tell.

+++++++++++++++++++++++++++++++++++++++++

I needed this transformer for the following lamp:
// Ceiling lamp with LED color changer and remote control =

! CAUTION!
In this lamp a transformer change had to be made. I have the old unsoldered and replaced it. If you have a little idea of ​​this is a matter of 15 minutes.

So after modification of the lamp it is really good. So I bought it myself, because I have a LED lamp searched where I can set the LED color itself. However, I have the Transformer for G4 bulbs replaced by an electronic terms of already with a voltage of 1W. Thus, it is now also possible the G4 bulbs (The consumption of approximately 81W total produce) be replaced with LEDs. For this I area of ​​the company GUMP bought each 3W where I'm also a total wattage of 27W, which nevertheless enormously less on electricity is then consumption.

Buy // In addition, I have these LEDs:
10X GUMP G4 3W LED Lamp Bulb & Lamp (LM 100, warm white 3000K, 120 ° viewing angle, DC 12V - Ø23 × 25mm) Super light energy saving =

++++ Why only 4 stars ??
Even if it does not occur so loudly has a star away because of the hum.