For a DTP/SYL style sound it's all in the layering. Go look up "supercrush pro tools skool" (It's one of the songs off of his new album) and there are so many little keyboard parts and vocal harmonies in the background that you barely notice but they really fill up the songs.
Get a kind of trebly kick drum sound going (Almost the same pitch as the snare) and make it LOUD. You really want to
feel it. Think like Love? style for the kick drum.
For his guitars it's nothing special. Double or quadtracked Mesa Boogie (Now he also uses
an Axe FX for some things).
--------------
For the vocals what he does off of Addicted is
brilliant. All of the screams have like a telephone style EQ or something on them, like a low pass filter that cuts off all of the high frequencies so he'll layer the scream 3 or 4 times and pan it outward, but because all of the high frequencies are gone you don't notice that its been tracked so many times it just sounds huge.
In general he just double tracks his vocals and pans them outward. Either one track center, or two tracks panned out left and right a little so they still sound centered but it's thicker. They're all exact enough so theres no chorus effect.
For the big yell things he just does two tracks or something of a low growl and a high scream so it's like a big punk yell effect but with scream yells.
--------------
That concludes my SYL rant o.o