rtoxic that is correct.
But, let's say you have a 100W amplifier and you want to have this output. Decreasing level by -3dB will cripple your amp to around 75W with max volume from dudu. Decreasing by - 6dB will halve the power to 50W. I have set - 6dB in my DSP for more comfortable listening at 1-5 of dudu volume control which means that now, turning Dudu to max volume I have half of the maximum output of my amplifier. So, having subwoofer with 1kWh power RMS, now I have 500W at max volume. Which is completely undesirable and frankly I can't understand why Dudu has linear volume control.
Logarithmic volume is the way for any audio device, there is a reason why all high end headunits have it. Volume gets gently amplified in lower volume levels and then quickly at the end of the scale. Then noone doesn't need to set their amps or dsp with - 3dB or - 6dB and still have full amp power at max volume.
This just doesn't make sense in Dudu.
Decreasing sensitivity of the dsp and increasing sensitivity of the amp doesn't make any sense, at the end you still have same volume level and same aggressive bump in lower part of the Dudu volume adjustment.
As Dudu7 is aimed at high end systems, they need to take into consideration that people have quite high end amps, calibrated to max power without clipping, same with dsp and linear volume control isn't the way to do volume adjustment. Again, linear or logarithmic, they still have full max volume the same, the detail is just in the first steps of the volume adjustment, logarithmic is exactly as we hear volume.
Sure, I can attenuate even more on my dsp to get comfortable volume in a quiet environment. But then I won't be able to get max from my amp. That solution is completely wrong for SPL systems or finely tuned ones (I've got 10 channels in the car on separate amps, and I want them to get full power at max volume, not half of their power because I had to attenuate dsp by 6dB because on 2 scale on DUDU it's too loud).
Or, at least give us option, or make volume adjustment more granular, like 0-100.
But again, there is a very good reason why all audio devices don't use linear volume control.
By the way, attenuation on dsp decreases also dynamic range of the signal.