2 Tecnical questions

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Nemomusic

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Here we go:

1) I`ve been reamping from digital files quite a bit lately and my question is: After impedance matching - Is there a particular peak level the files should be normalized to in order to hit the input "correctly"? After experimenting it seems to me that a peak level between -3 and -6db makes the amp react most similar to the way it reacts when i`m playing with the same guitar. Is there a scientific answer to this question or should one just experiment.

2) From a technical point of view - What does the "deep" filter do and is it intended for some specific purpose? Is it adding sub-bass or is it affecting the input impedance or what?

Never thought i`d fall in love with a man until i met Herbert....

Nemo :inlove:
 
The easiest way is to change the levels in your sequencer program on your computer.
If you're still far away from the levels you found out to be working the best, it means you simply didn't record good levels. If you recorded a signal which is hovering around -6 to 0 dB, is that working right away? Or does the impedance matching decrease your signal level seriously?
That would be a problem.

I wouldn't normalize audio in any case, as you will increase the level of quantisation noise (don't know the exact phrase in English). And that's simply not sounding natural to human ears. It might be subtle with one track, but we're talking about guitar recording here :D. Believe me, it adds up and becomes worse with every normalized track.
Most reamping boxes have a level pot, like the Radial Engíneering ones. The problem is, you're leveling a signal which already passed the A/D D/A converters. Same as normalizing. But in a certain range it makes sense to have that pot.

Conclusion: as long as your amp sounds good, don't try to achieve 0 dB when hitting the amp just to be perfect. The trick is to record as near at 0 dBfs as you can without distorting the converters. And to find the amp's sweet spot at it's input. When you say you found this spot between -3 and -6, you should be able to get it with proper leveling at the recording stage. As long as the impedance-matching box doesn't eat decibels.
 
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