I can't quite figure out if it's some sort of reverb on the low end or a reverse kick on it. It starts around 1:28
orTof�nChiLd
i'm also interested to know how its done
DjWoody
If you're doing it live, you can achieve something similar with the echo on the DJM800. But in a recording? hmmm... Beat Repeat? I'm sure there's a few ways to get that repeating pattern.
meriter
the beat is a sample of busy child by the crystal method
skyhunter
Reverse kick like in hardstyle, less distortion and a low pass.