I am able to compensate for Audiolenses insertional loss in my convolver (adding equal gain to all channels).What it achieves is being able to turn it up to 0dB on your volume and having it sound as clear as -20dB. However it'll be 90dB on a meter instead of 100dB because of the headroom management.
Hearing music at 90+db without distortion of any kind is a decent tradeoff for amplification power.
To achieve the same thing you are saying.
Do this either in the convolver or the correction files themselves and you can swap out any hardware any time.
There is no need to do this on the DAC if you are someone swapping out DACs
I don't think the complaining dude knows how to do this