All i ask from a car stereo is for it to sound reasonably clear and punchy enough to overcome traffic/road/engine noise.
At low volumes, i find the Swing plus unit sounds muddy and compressed.
Frankly, it isn't particularly loud even when maxxed out.
It sound ok-ish with simple dance music and radio dialogue, but thats it.
Anything more nuanced just sounds awful at any volume.
Like i said, the cd radio swing in my old mk2 sounded far better.
Interestingly i recently test drove a Polo, and the system sounded very poor... very tinny.
Mayby its just VAG cost cutting or a marketing ploy to make people go for expensive options such as Beats audio.
The top option on the Fabia is the the 'Amundsen' system with intergrated sat nav.
I'm not sure if there is a difference in sound.
After a bit of googling, it seems the swing plus unit is manufactured by LG.
The head unit is attached to the back of the screen rather than a separate box like the Bolero.
It does look quite small, even more so than the standard single din head units.
My guess is that its just too underpowered.
It doesn't have line outs so you can't even add an external power amp.