[XLR8A]

As far as i know on virus ti you can't actually split a preset into two channels with eq and then process each channel individually with different effects, correct me if i'm wrong. Also resampling is a must, resampling a filtered bass through the same filter couple of times over and over is what gives the rough 'squelchiness' that you hear in many modern dnb basslines. This is how it's done usually. Check out Calyx&Teebee latest album on Momentum, it has some of the most complex and futuristic basslines i've ever heard in dnb. Check this out:

Calyx & Teebee - The Shape of Things to Come


Calyx & Teebee - Make Your Choice


Calyx & Teebee Studio Interview