Kef 105/3 vs model # 105/3S


I've heard and seen many pairs of the Kef 105/3. There was also a model 105/3S. I have a pair and can find no info on the "S" version and how it differs from the 105/3 non "S". Can anyone help? Thanks!
128x128tarasell
Yes there was a 105/3S, if I  remember correctly it was touted as audiophile edition. I remember that it had brown grill covers instead of black and I think some crossover differences.