Quote Originally Posted by dsumanik View Post
...SNIP...
Sunbeam Rheobus - no howl, fans start to spin at about 7.2 V
Noise Isolator PWM - Very audible howl of varying pitch at any voltage below 80%, fans will spin from minimum setting.
TMS-200 - no howl, fans will spin from dead stop at 20% voltage
....SNIP...
Complete and utter rubbish. There are very few fans I have that don't make noise when attached to that waste of my hard earned cash.