how to get Extremely distorted Metal Vocal Scream sounds?!!!

It wasn't really hardware oriented though..it was performance oriented. What i was getting at is that no plugin will "crack"the way a real physical device or object will. I was mainly using analog preamps as an example as they can impart an almost facsimile of that sense of something being overloaded, not just clipped because of the multiple gain stages and their impedance, but for what you want, you need to get most of it in the performance then you can capitalise on it(as i already said)with plugins if you so wish, but if i wanted something to sound overloaded like it is on the brink of shattering into a million shards, but it was initially very tame, say a basic synth patch, i'll get there quicker and more convincingly with outboard e.g abusing an old mixing desk for instance. The plugin attempt would like always be a pale imitation and wont sound as physical as the former for tonnes of obvious reasons e.g plugins are fine and discrete, they have to be clamped so eventually all you will end up with is clipping and clipping is not really all that interesting when you want broken timbres. You are trying to attain things like crossover distortion and abusing the quirks of magnetic hysteresis in transformers (which when overloaded is a kind of crossover distortion)

You'll be 70% there with the performance and deliberately poor mic technique alone though. The processing is a matter of taste and preference and listening to your example yeah, this does seem to be entirely plugin based other than the recording chain

/r/AdvancedProduction Thread Parent