ITunes should not route audio through EQ when routing to AirTunes speakers

Question

I just got a 2nd AirPort Express to use as AirTunes speakers. It's plugged into our very nice AV receiver via optical cable, so the sound quality should be as good as it can get with this sort of wireless setup. But, the audio is being EQd by iTunes, using the custom EQ setting I've created for the speakers I use at the computer. This is wrong. iTunes offers a way to easily switch between "speakers", but no way to pair up EQ settings with each. It should use the current EQ setting when routing sound to the computer it's running on, but either use no EQ or a preselected EQ when routing sound to any AirTunes speakers.
Why would it EQ the audio going to some unknown audio device that's plugged into the AirPort Express, most likely in another room where it would be impossible to even begin to EQ it by ear from back at the computer?
So, is there any way to do this now? If not, I'm sending feedback and logging a radar so they'll correct this huge oversight.

Answer 1

Our cordless phones are 5.8GHz.
Some cordless phones also use 2.4GHz for paging between handset and base station.
Can it happen
that interference only shows up with multiple
speakers selected?
Due to the bandwidth requirements possibly. Streaming a single audio stream is less bandwidth intensive then streaming multiple audio streams.
If you were trying to stream video you may find the same thing.
As long as we're talking about possible sources of
interference, we do have two 802.11b networks in the
house. Could that be the issue?
Yes.
What channels are the three wireless networks on?
iFelix