So dsnuts and danny, I'm looking forward to your impressions of the Basso's now that more burn in has been achieved!
Who else has ordered these puppies? My ears get quite hot in the summer, so I'm liking the idea of using my CKS1000 and these Carbo Basso iems more than my headphones during the summer. As far as headphones go, my ksc75's (on headband) are quite light on the ears, and I don't care if I get sweat on them, and they sound great, so they do a good job. But, I think that I'll also get the Koss Sportapro's (same driver as portapro's) for $30 and do these mods on them which I found in this headfi post - will sound awesome I am sure! And again, I won't care about abusing them in the heat.
I have over 100 hours on mine and it's smooth as day one. I really can't hear much of a difference after burn-in. If anything, it's sounding very full right now. The bass might have added some extension to the lower regions. This is one smooth sounding IEM. No fatigue in any region. Nice big bass, smooth vocals, and very smooth treble. Very enjoyable listen.
It's not going to overtake any of the favorite IEM's in this thread but it stacks up very well against them. Very comparable to something like the CKS1000 which has a nice balance but adds some good coloration to the frequencies for an immersive listen. Highly recommended buy for anyone but especially for those who's budget is tight or do not own some of these more expensive IEM's in this thread.