I have this amazing new MacBook Pro. One thing about it is very annoying. I know it before, but didn’t expect it to be so bad. It’s the 3.5mm sound output. It makes noisy and beeping sounds. And it’s too loud. I talked about this problem with a few people and most of them can hear it too. The only solutions seems to be a attenuation. Since the noise is independant of the system sound intensity you can increase the volume and pull everything down again. I use the attenutator which came with my Ultimate Ears Super.Fi 5 Pro earphones. These earphones may support the problem because they are pretty good. They transmit fine sounds quite well. That’s good but works also with unwanted sounds like the MacBook Pro noises. Anyway, I’ll never go back to crappy earphones. Once I started using this kind of earphones the models went up in quality and price. I started with ER-6 from Etymotic Research. Not much of low frequencies but very clear. I believe they were the clearest phones I used ever. But since I believe in change the next ones were the E3c from Shure. There were the basses again. Just when they broke I was lucky enough to win the Super.Fi 5 Pro. They have two sound converters in each phone. However the difference to the Shure was not as big as I expected. But they are still the most pleasing phones I ever had.