Memory says to me: such a thing existed, I remember it.

But google doesn't find it, so perhaps it's some simple side utility that just integrated itself into the WXP shell.

When I plug in my line-out, Realtek HD Audio Manager pops up. It's got quite a few options and lets you save EQ presets. This was added when I upgraded my drivers after moving to Windows 10. Until I did that, I wasn't getting any sound at all.

Foobar2000, which is the player I use, also has an EQ but the Realtek manager is more convenient.

I'm plugging my PC into my stereo amp, though, which has its own built-in EQ.

Yeah, I was shocked when I realized they just weren't there lol

I hope someone has a good explanation.

Well with a dedicated Soundblaster sound card you probably have special software to go with it so Im afraid that won't be of any help at this moment. But please check wheen you get home.

Damn it, maybe I should have installed my old Soundblaster in my new PC.

Microsoft just does whatever they want, honestly.  I used to use Windows Media Player now and then just because it had some nifty visualizations that I'd leave on to hide the screen.  With Windows 10, that's gone.  I hunted all over for the option, getting more and more pissed off, before I took to google and eventually found that they'd simply taken it out.

85 Euros didn't feel like a lot of money for this awesome quality.

But buying dedicated sound cards for the PC is a thing from the past. Or so I heard, many times. People say that as an ordinary user you just don't need a sound card because on-board audio reached such good quality a few years ago. Only professional musicians need dedicated sound cards, but it's meaningless for ordinary audiophiles and gamers.

Specifically I heard that Soundblaster pretty much went out of business or changed their business strategy half a decade ago due to people not needing sound cards anymore. One review said that the later SB card just couldn't improve regular audio sources anymore (like games, movies, CDs), only provide some sort of filtering techniques if you wanted to improve and edit crappy sounds, like filtering unwanted noice from a concert recorded with your mobile phone and stuff like that.

Do you have a sound card yourself, vivst?

I use a FiiO e06. Its EQ has basic bass and treble controls, but its quality is far better than any software EQ I've used.

Having a separate sound card is ubiquitous if you use cheap $10 - $50 speakers. But if you have quality headphones and/or speakers connected to your PC having a sound card is a must. The DAC quality far exceeds what onboard can give and onboard audio will have noise from the motherboard that is nearly impossible to get of without an add-on card or external DAC. 

In your case, you have very high quality headphones that need a better DAC to fully utilize, and if you use a sound card you will have the software's EQ option that can be set by app or universally. 

I have a very nice Logitech Z5500 5.1 system for my PC and the difference between using my SoundBlaster Z and my onboard audio is night and day in all applications.

I took the liberty to boot up my XP machine that I use for old games like Diablo 1/2, Starcraft, etc... and I'm not finding it.  Perhaps I was remembering wrong or perhaps I was remembering winamp or some other program that did it easily.

Under options on the Master Volume there is Advanced Controls but for some reason it is not bold (you can't click on it).

If your audio is realtek you should have the Realtek HD audio manager which has an equalizer, can't think why it wouldn't be there unless the vendor uninstalled it (though there is no reason for them to do that).

If you go to the old style control panel (not the new settings app) it should be there, or check programs & features.... if it's not there at all you can probably download it from somewhere.