adjust power output

[Jean-Marie]

I don’t think reducing the max output power is affecting SQ in any direction.

If it makes you feel safer, go for it, otherwise there is absolutely zero drawback to listen with a very high attenuation.

There are some people who are using a D1000 with high efficiency speakers above 120 dB / W!

You can imagine what their attenuation must be, I would guess in the range of -50 dB

Jean-Marie

thank you for the answer,  i do think you are right,  it`s just that i have heard a few reports regarding Devialet sound a little closed in at low volume.

There have been countless debates on it and no consensus. 
The he most likely is that it is related to the response curves of our ears that vary with volume much more than what is the level of attenuation in the Devialet. 

Jean-Marie