so i was a believer of dacs and amps don't change the sound quality of the device because they are all flat and transparent sounding, but take a look at this graph i just found. it appears that the idsd tilted the freqency response to achieve a warmer sound, this resulted in a more bass, warmer mids and tamer eargain and treble area. so my question is why that happened? is the power or impedance thing? im not knowledged in amps or dacs, can somebody tell whats hepening here?