I have a lot of old rock albums, and almost all of them have static recorded in the music, so no amount of fiddling with my amp and headphones can block it out. Is there any program that I can run the music files through to clean them up? They are saved as ALAC (Apple Loss-less) on iTunes, ripped from CD's.
I listen through a pair of Beyerdynamic DT-770 PRO 250 OHM, driven by a JDS Labs C5D Amp+DAC. This is a problem with the music, not the equipment. And yes, I know I can change the gain on the C5D, and it hasn't had a significant effect on these files because the noise is embedded in the recording.
"Tape hiss" as it's called is considered a good thing in most audiophile circles. It means noise reduction has not been applied. Noise reduction, while it might remove hiss, will also remove other subtleties present in the recording. It's a by product of playing back an analog tape.