Today i noticed something strange, like i said somewhere i have lots of recordered radioshows avg vbr -V1 200kps.

But because is missed a lot of shows, i dloaded them from someone who recordered them in cbr 128kps (not lame and encoded 4 years back), better something then nothing right ;-)

On my stereo (very good amp and speakers) they are ok, not good but worth listinging. I also put them on my creative Zen and i noticed that i had the put the volume up 30% to get some "depth or power" in the music and to hear something. But i also got headache, becuase it seems i am trying to focus so much to hear details o what you call it. It wasnt pretty listening. I had luckely 1 my own recorded mp3 also and when i switched back to that one, the music was so much richer, i was pleasant it was music, the headache went away.

So i ab'ed a few times and stayed with my 200kps mp3, its like your brain tries to fill in the missing gaps or peaks, like its translating rubisch to pleasant, i dont know what else to discribe it.

Does someone else ever noticed this? I never heard about it before.

are you sure the headache is caused by missing details?

the radioshow may not be tuned for headphone listening.
While listening to natural sounds the brain expects them to arive at both ears no matter from which speaker or direction the sound comes from. Strong channel seperation can "confuse" the brain, because while listening to headphones no sound from the right channel can be heard with the left ear and thats "unrealistic" for the brain. this confusion may annoy you especially with a stereo enhanced audio, that is used by many radiostations.

there could be unhearable high-frequency content in the recordings
caused by a loud pilot tone of FM-stereo.
your speakers may not reproduce these frequencies as loud as your Headphones do.
you could load your recordings in a sound editing program to look for loud HF and other artefacts.

...strange

...Maybe you just listen to loud or louder than on your stereo.

greetings