I couldn't hear any difference between the computer and the digital out of the CD player driving the DAC. If you have a resonably large CD collection having your tracks on the computer can really change the way you listen to your music. For example, I have a playlist of Miles Davis tracks from the 1950s that runs for about 5 1/2 hours. Everytime I start the playlist the tracks are played in random order. I typically only listen to the playlist for an hour so each time I listen I get to hear some new tracks.

The BM6A uses the Esotec 28 mm soft dome tweeter. I listen to quite a range of music from old low fidelity reggae to state of the art jazz recordings. Everything sounds quite good on the BM6As.

I had a pair of Thiel 1.5s I listened to for over 6 years. I really liked them but the tweeters could be a bit fatiguing although cymbols and brass sounded amazingly realistic. I moved to a smaller listening room and the Thiels just didn't work. You really need to sit at least 12 ft from them for the magic to happen. I can sit quite close to the BM6As and they still sound great.

i've listen to the puppies IV i think? and i've also listened to the really big ones with like 7 different elements on turn screws that went for like $88,000 10 years ago and i have to say it was one of the most amazing listen experiences ever. but hey who's got 200k to spend on sound - i surely don't :)