botus99
Microphone Assassin
Ive had a look at professinally tracked dis used for reamping and they are clipping and everything occasionally and you can hear it. Seems to help attack. I realise we worry about stuff like that when really just being concerned with a good balance is far more important.
Depends what you mean by helping the attack. If the guitar player in question doesn't control his dynamics well and you need to level out the hard hits, then it might help. Also keep in mind, I'd put good money on those DI's being from a guitar with active pickups which tend to clip the signal before you even plug into a preamp.
I don't get why the level matters at all as long as it's not clipping. What's the difference between having peaks at -18dbfs and -6dbfs? Not only for DIs but for recording in general.
Saturation from preamps and coloration/transparency from your converter are the 2 main reasons level does indeed matter. Some converters, for instance, sound more transparent around -18dbfs while others are truer to the original signal at a hotter level (-6dbfs).
And preamps come in so many flavors, to keep this short I'll have to generalize. A preamp is going to color your sound differently depending on how hot your signal is and what type of preamp it is (tube/solidstate), exactly like the preamp on a guitar amp (lower gain is cleaner and higher gain is more saturated).