My new headphones arrived in the post today, and they are good, really good. Actually they are too good.
I can now hear how horrible the sound output from my PC is. Even FLAC-files (compressed with a lossless algorithm) has some kind of distortion effect which is quite unpleasant to listen to. I have no idea why this happens. It could be the sound drivers in linux, the onboard audio driver on the motherboard or simply just that some adjustments are needed.
If this continues, I have to go back to CDs. This is just horrible to listen to.