Thank God, by adding plenty of sony's foams into the nozzle and using comply T-400 tips, the harsh treble from hi-hats and cymbals are all gone. It may be muddy for my taste but it still maintains separation and soundstage. Plus, isolation is greatly increased ( which I couldn't achieve with the stock tips) and I can wear it over the ear due to longer tips provided from the comply.
Somehow,I'm interested of getting T-200 since it's more compatible to the XBA-30 as the website says. T-400 fits these perfectly in ease without twisting, but somehow the bore size is too big for my ears.
Funnily, my ears are still traumated from the first time listening to these so still maintaining at really low volume.