Just got some vocal tracks in. Theyve been recorded with SB Audigy, an old Mackie mini mixer and a Rode NT1. The takes themselves are good as it gets but there's a problem: sibilants sound harsh. Theyre like mp3 gone bad. Is the Audigy the most likely culprit? Any suggestions on curing this evil? I have only good things to say about the Mackie and NT1.