Well, to chime in, I cant stand on-board Audio quality.
The sound output is missing a lot of spectrum, and the spectrum thats there, is horribly uneven.
Even with the Realtek EQ software on my Laptop... I cant get it to dial in good sound.
On my home PC, Ive got an old Soundblaster Audigy. Kicks any onboard's sound quality to hell and back again.
Say what you will, but even Arcade machines had some great Synth sounds. Not just compressed Audio.
But even IF your hearing something playing compressed audio... its still going to sound that much better with
a decent sound card.
Ive heard tiny cd radios that sounded better than the output I get out of the Onboards.
But hey, if your hearing is Crap in certain frequency ranges, then you probably wont be able to tell the difference.
All I know, is that a guy who claimed that his hearing was bad due to damages over the years... I gave him
a taste of my Audiophile Sennheiser HD590 headphones connected to an MP3 player with mild quality mp3s,
but pretty good sound quality hardware. His Jaw dropped to the floor in amazement. Couldnt believe the
level of 3d spatial effect, and crystal clear, distortion free audio.
One thing you should note... is how important good Audio is to an Experience. In fact, you could have a great
looking modern race game.. or movie, but with a bad sound track... it can completely ruin the entire experience.
Likewise, you can take a primitive Black and White silent film, or video game.. put an incredible orchestral track
& sound effects to it... and it can make the person accept the primitive visuals.
Think Star Wars, or Indiana Jones. These sound tracks make these movies stand out. They give emotion to the
scenes that visually are not there. Watch them without sound... and you will immediately feel whats missing.
My point being, that good quality Audio is pretty important, Imo.