Happy and high fidelity New Year to everybody!
So I have returned the Sony WH-1000XM3, and bought Sennheiser HD 600, hoping that I will no longer hear what I call distortion of the high powerful soprano and tenor voices.
I was wrong. It turns out that the better the headphones are, the more I hear it.
So, what is the problem? Is it the PC sound chips? (BTW - there is no problem driving the 300 Ohm HD 600 from my motherboard - it has a headphone amplifier.)
The PC could contribute perhaps, but I tried an optical feed into my Sony AVR, and I can still hear the distortion, even with speakers.
The same when I play a CD on a stand-alone player connected to the AVR, and listen to the music on speakers or headphones.
So it looks like that it is my hearing. Too sensitive to harmonics, while generally my hearing of high frequencies is poor when tested by a simple sine tone. Sounds strange, but I can't think of anything else.
Maybe there is a bit of contribution from the recording, and from the PC amplifier.
I can see the offending spots on the frequency spectrum display in Audition. They are the harmonics in the
2.5 kHz to 5 kHz band. Too laud. I can select them one by one and bring them down, but that would be too laborious, because just about every opera aria and some pop has them.
My solution is to use a parametric EQ. I like parametric because I can see the response curve. With multiband EQs it is not possible.
I have installed the Equaliser APO and a VST plugin called TDR Nova as shown below. It was quite easy to get the desired curve. I am lifting the mid range a bit to compensate for my hearing loss.
The EQ curve looks quite drastic, but surprisingly, to my ears it sounds good. The music sounds a bit fuller than before.
And there is no harshness in the high tones.
So going back where it all started - with the Sony WH-1000XM3, there was nothing wrong with them.
But I would not go back to them even if I could.
They are not intended to be wired to a PC for 95% of their use. They are for people on the go, and for different type of music I listen to.