Reduce max power with high efficiency speakers or not?

[ogs]

Yes, limiting is basically done by reducing voltage on the power rails to the amplifier stage. I think with the D-Premier it is worth a try. In my system I needed the power (because I used both convolution and bass EQ), but 100dB efficient speakers should be happy with less power (start with 30 watts and see how it goes). There may also be an improvement in sound quality by reducing power. I believe this depends on the firmware one uses. Dynamic Power Management was introduced at some point, but I don't think the D-Premier power supply could take full advantage of DPM.
Remember that ADH stands for Analog Digital Hybrid where the 'A' is a class A analog amplifier. Devialet used to demonstrate that the D-Premier still played music with the class D stage physically removed.