I used to have some doubt about legitimacy of this lossless.
But although I'm not an expert, I would say the waveforms are a bit low not because of the cut-off of the higher frequencies, but because of the absence of dynamics on this very quiet music.
Here it is by the way. Judge by yourself.
mega.nz/file/iMhHxZCC#Z7rNk1orCdDJNapzLR43RLaXAq54iH3AIB-xYhIC5-o