I won't say more melodious simply.
The Braun are a true closed 3 way system and quite a sensible one.
It portrays music in the kind of way a Yamaha NS 1000 does, if you know this one.
Not reaching the Yamaha's stunning quality, but this direction and solidly and astonishingly well for a speaker from 1974.
The Braun has a 20cm paper midbass that is very sensible & relatively light and 2 carlottes as mid and tweeter.
Thus they cover the very important mid-treble range spectrum with 3 chassis and greater sensitivity than the Kan with 2.
And with some kind of music, mostly accoustic stuff, this can give you a cold shock coming from Iso or Kan.
I can switch it back and forth as I have both systems running in parallel the moment.
I won't join a pro or against Kan camp, as I see no sense in it.
It is not to be pro or against, but more simply to know what the Kan is and what it is capable of and what rather not.
In my view Kan and Iso do-basicly- the same, do their thing the same way.
Do you drive-by Nürnberg?
I'd invite you for a coffee & within ~10 minutes you'll know what I mean.
That doesn't necessarily mean you will prefer that,
bc depending on your music taste it may be the Kan does better with the music you like.
'Angel' from the Mezzanine of Massive Attack for instance is simply insanely good on the Isobarik.
The Braun does 0 points in that compartment,
this is something a NS 1000 well set up and with beefy amp works with indeed.
Both, NS1000 & Braun cover the upper mid with very sensible conus where the relatively heavy mid chassis of Kan or Iso has no chance deivering finest detail the same way.
If the is fine detail in this freq band to be told, depends on the music you hear, but bass clarinet, saxophone , diverse flutes, trumpet tell stunningly interesting storys in exactly this freq band & imho it's worth being heard.
Also the Kaber does considerably better in this particular field than the Iso,
by far not as fine as the NS1000, but maybe a halfway compromise inbetween Isobarik and the Yamaha.
Might be worth a thought if you'd like a good part from both worlds.
But it's not my aim to talk you off a Kan,,,the Braun costs peanuts, so you easily can have both should you like,
I have the Braun on Kan stands which fit them perfectly btw.
My invite for coffee & a few comparisons is open..
Cheers, T