Audio-out hiss/noise problems

There seem to be a problem with the audio output on the new MacBook Aluminium. There is A LOT of noise/hiss on the audio output, especially when using low-impendence headphones. The noise/hiss is the same regardless of volume. If you search the web, you will quickly find other discussion boards concerning this problem.
To test for this:
1. Find a pair of headphones.
2. Check their impendence.
*Be sure to play some sort of audio in order to activate the audio card. If you just plug your headphones in, there will not be any noise/hiss because the audio is disabled. Some report that after 20 seconds of no audio, the audio will deactivate again.
This does not seem to occur on high-impendence headphones or stereos.
I think it is important to inform Apple about this problem and hope for some sort of fix. If it could be fixed with a firmware update it would be great!
I am not aware if the new 15-inch MacBook Aluminium is also affected by this problem.
A workaround for this problem is to BUY a volume control you place between the audio output and the headphones. However, I do not think this ought to be necessary on a $1,299 computer.

I have a ground loop isolator. It still hums.
I am now trying using the digital out port, connecting in to my optical digital in on my stereo receiver. That works better. However, the thing about that which dives me nuts is there is no way to control the sound from the mac without going into system preferences, sound, and using that panel. Even just to change the volumn. This is very clumsy. Any ideas of a way around that?
noodl<<Font face="BlizzardD">ehead»

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