In recording, how to get that 'cranked amp sound' ?

[Tubed to Life]

When you record a cabinet sound, you can crank the cab source. Why is it not the same when in simulation, direct-recording? Or is it, and perhaps my input level is too low? And, on that note, how do what (besides my recording software) is determining my input level, via USB recording?

 

[Tubed to Life]

Never mind. I figured out I needed a new battery in my EMG81-equipped guitar, as my passive pick-up guitar did have that raging sound. (I just don't like some aspects of the latter guitar's tone to use it that often.)