The digital conversion process that happens when you send a reactive load signal to an interface where an IR gets applied is no different than the digital conversion process that happens when you take a fully mic'd rig and send it to your DAW.
IR's are linear. There is no additional "compression" inherently added to the signal just because you place the digital conversion stage slightly earlier in the signal chain. If anything, using a reactive load and IR's means the signal is LESS compressed than traditional setups because real speakers can compress when driven very hard, while IR's will not. At normal amp volumes though, that speaker compression is basically negligible.
Even most pros will tell you that a well made IR is basically indistinguishable from the real mic'd cab as long as you have a quality reactive load to put the amp through.
I think the reason so many amp demos show so many amps to be vanishingly similar to each other these days is because people are finally understanding how to properly eliminate variables and normalize everything BUT the amp, and when you do that, you come to understand the unpleasant truth that amps, as much as we all love them, probably simply matter a lot less than we think they do, relative to everything else in the chain.
This. All of this. Should probably be a sticky.
Problem with I.Rs are, just like close mic (or poor phone) recordings is that you're going to hear a lot more terrible ones than good ones. The shear quantity of shit being uploaded everyday cannot even be calculated. The load is absolutely critical, and some of the most popular ones on the market are
way off emulating the impedance curve of a cab. This hardly helps this situation, and is even worse when coupled with an unsuitable IR.
More important than the right gear is the talent involved. That Blake dude gets consistently great sounds with IRs, and conversely it's pretty easy to find terrible sounding miked clips.
Think they all sound kind of equal which is not very good in this vid
Still not understanding using that sE mic which I’m going to blame, the petrucci vid sounded like shit, his mark vll demo sounded kind of unflattering and now this doesn’t sound very good to me, and I usually love Ola’s mesa tones
Yeah odd choice using a ribbon mic alone. It could be that 'YouTube' tone is actually becoming its own thing in a way (I know, I know). I believe folks not used to hearing album or 'mix ready' tones isolated may be influencing this via their 'feedback'. I've noticed a lot of these comments in recent years, and it often goes something like this:
- High end/bite: it's too brittle, you wouldn't put your ears that close to a cab, it's fizzy
- Low end: there's no thump, it sounds small, my amp sounds huge 'in the room'
- Tones in a mix: you can't tell what going on with all that studio trickery
Listening on earbuds, phone or ipads problem isn't helping.
So it seems some content creators go for thicker, darker tones with no mix examples to appease this crowd. Fair enough, gotta keep folks happy. Personally I find these sounds flubby, distant and dull, which is not real useful.
Just a theory, not sure if anyone else would agree with this.