do your (easy) homework before posting absolute bullsh** on the internet. the Arturia lowpass filter is 12db, just like the hardware.
the earlier version defaulted to 12db and had a button that let you switch it to 24db, optionally. the V4 appears to have removed that option, though. I'm guessing you probably saw the '24db' text printed on the older version panel and decided, incorrectly, that it meant the filter is 24db, but you're wrong -- it's 12db, and that button is a switch to make it 24db.