Is this a digital or analog recording?Your bass sounds possibly too "fat" and your cymbals possibly "dull".This could be due to firstly an incorrect tracking weight and then the VTA would have to be adjusted accordingly.I don't think Rega's have VTA adjustment,but go to the Walker Audio site and you will see a link to fine-tuning your table,on the left.I don't think you would totally get rid of the noise but there is plenty of info about correct alignment,overhang,azimuth etc. for the Rega arm over at the Vinyl Asylum archives.