Considering how many systems I've heard this on, not just my own, and how long I've been able to hear it, no. Definitely not.

Some newer boards have gotten wise to the issue and generally shield or provide an exclusion area around audio carrying circuits. Not all of them do it.

Above and beyond that, the amps used are generally crap and distort at high volume levels, so no matter how good your headphones are, the audio always sounds like hot trash at high volume levels regardless of pretty much everything else.

My AG06 costs as much as a cheap motherboard. There's no doubt that the audio hardware, designed and produced by Yamaha, a well known name in audio equipment, had been built with better components than you'll find in your average onboard audio solution, and with more attention to detail about interference sources.

Considering the AG06 is on their low end of equipment, compared to some stuff out there, it's complete trash. There are audio interfaces and headphone amps that cost 5-10x what I paid for the AG06, and some that cost more. I promise you they sound better than my dinky little audio interface/mixer.

I've said it before, and I'll say it again, if you're happy with your audio solution, cool. Use it. I'm not here to judge you for what you like. For those who hear the distortion and interference from onboard audio, they already know what I'm talking about and likely have their own audio setup which eliminates any trouble they might have with their onboard audio. As long as they're happy with theirs, cool, they should use it.

I'm happy with mine.

Please don't argue that the problem doesn't exist because your limited experience hasn't noticed it. That kind of subjective anecdotal evidence proves nothing beyond the fact that you don't have a problem with your setup.

That's cool. But don't tell me that it's not a problem just because you don't have that problem.