Has anybody else tried LITZ wire for speakers?

I would like to share my experiment:
I had just made speakers cables out of LITZ wire. I braded together 9 strands of 12/36 litz wire for each of 4 runs (2 per speaker). And the results were great. I new I would get better highs, I was not sure about the lows - I had doubts if the thin wire would be able to handle high currents of low frequencies. But everything sounded great - very clear high frequency and very tight deep bass. All this without any time for burn-in.
I am very interested if any body else had experimented with litz wire before and if you had similar results?
And if the results are so good why litz wire is not being used in making of speaker cables.