Well, TB303 (or its emulators) let you choose between Sawtooth or Pulse oscillators. The advantage of the TB303 is in the patterns you can set, and in features like accent & glide that you can hear in your example.
The filter they used here is Bandpass filter with medium resosance (other words to "hadgasha") on the filter envelope.
Please don't mix up between pieces of information that you've heard or read.
To say 4 pole is 24db LP, its like to say BMW is four wheels,black.
if you want, you can give detailed explanation to the pleasent of the readers who doesn't understand this syntax.