When I was seriously looking to go down the new A3 Sportback route (the new 8V MQB type) a couple of months ago, the boys over at Audi-Sport.net were all singing the praises of the £750 B&O system in the Audi. Needless to say, I couldn't find a demonstrator with the B&O installed, but did find a couple with the entry level optional "Audi Sound System" installed.
Now Audi offer 2 upgrades - the Audi Sound System at £255 which gave you 10 speakers including a sub in the boot along with a 6 channel amp with 180 watt output.
The B&O System gave 14 speakers including the sub, as well as a 15 channel Amp with 705 watts output and full 5.1 surround compatibility.
Well, like I said never managed to hear the B&O system, but had a good play with the £250 Audi Sound system and at first, it didn't sound much better than standard. However once I'd "tweaked" the settings, raised the sub level etc, it completely blew the standard system away (so god only knows what the B&O system must sound like).
So I'm hoping that the Dynaudio system with a 10 channel Amp and 400 watts (albeit without the Audi's 10th Centre dash speaker), "should" (I hope) sound somewhere in between the pair of them.
Like I said, I hope so...........
