I understand. I did a little test with this - listened to music for about 4 hours at my buddy’s house at loud volumes at times that generated zero listening fatigue - he has the salons. But at home with the F208 there was some listening fatigue. The tweeter imho has a little bit of graininess in the F208 that isn’t there with the beryllium tweeters. So there was probably some less than perfect recording thrown in which is probably realistic.I have no problems believing and accepting that f228be is better speaker than f208 and I wish I could afford it or at least had a chance to listen to it. My mere point was f208 does not give me fatigue unless on problematic records that is
Also just in general I don’t think the F228Be is rational upgrade fo the F208. I was irrational in my upgrade choice which is also common among audiophiles.