I find the range of corsair actually quite noisy. For a range "Silent Edition" we must admit that it's a shame. I tested the controls between 600 and 900 RPM and it's not really the pale that are noisy but the rotor / motor that quite annoying noise of serious friction ... In short good with LED and everything but I'm not completely satisfied with the purchase ... Valid for both the 120 and the 140 cm.