boils down to good mixing, essentially. shaving out frequencies. plus whatever home brewed tools he may have to facilitate that. there's a lot of gating and ducking on drukqs, suggesting a forced cohesion, plus, the guy's got the time an money to basically tool around all day with this shit. ears, trust in your working environment, and a good ear. so go figure. working with fft and spectral manipulation generally sounds pretty terrible; even the famous face in windowlicker sounds pretty good compared with amateur attempts; my thoughts? either a great and woefully underappreciated studio engineer, or he's just that good.