Dynaudio contour with 30 watt amp

sensitivity has nothing to do with weather the speaker is tube friendly or not. it's impedance. speakers with relatively stable impedance are tube friendly regardless of db/w/m.
the usable power is what actually defines the ability to drive the speaker.
theoretically you'll only need 2w of power(ha @1khz...), but if the impedance drops bellow 8Ohms the power halfs and even quarters. therefore chances that you'll be missing lots of resolution and you simply waste your money.
i bet it'll be dead silent in the region bellow 55Hz.
i'd use an additional high-pass filter in order to get descent performance above 55Hz where power isn't necessary.

I've owned Contours and Confidence line and 30 watts isn't enough. Tubes are ok, but you need higher power.

SET, 845 tube, 30W, class A has more then enough juice to drive Dynaudio C1. Bass, dynamics, all there. Loudness at 9 o'clock for normal listening. I used 200W solid state amp with C1 before.

Alright, we have had a myriad of responses, all with different, and confusing results. So let's go back to the original question and take a vote:

"Will a 30 wpc tube amp damage Dynaudio Contour 2.8 speakers when listening at very low volume levels?"

I vote for no, using a 30 wpc tube amp at very low listening levels will not damage these Dynaudio speakers.

Remember, the question is not what amp you think will work optimally with these speakers, but will a low power tube amp damage these speakers at low listening levels.

No way would there be any concern for damge, I wouldn't worry about this at all.
Charles,