Quote:
Originally Posted by Anchoret
It's not my job.
There are a lot of people whose job it is.
Those are the people to whose information on the subject I want access.
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Dude, I hope you were being sarcastic, because that was pretty insane. You make it sound like some big conspiracy or cover-up or something. Um, it's not! You can look up the datasheets to every component in every pedal. The bottom line is that there are a lot of intangibles that are impossible to describe in a datasheet. You wouldn't believe some of the things I've seen happen in my field (practicing electrical engineer in military/aerospace field with a master's) due to changes in semiconductor fabrication that impact characteristics no one would expect to be in a datasheet.
I had a ton more written here, but it doesn't matter. When you look up a datasheet and it shows different packaging options (DIP-8, SO-8, uSOP-8), they all use the exact same semiconductor die. If you're to the point of obsessing about what difference the package makes, I think you're not just playing guitar enough. I could mathematically prove that parasitic capacitance, inductance, coupling, ESR, etc., are different. But it's on such a miniscule scale that it doesn't matter.
I guess I'll draw a line if you really want me to. I guarantee you that if you buy identical parts in through-hole and surface-mount packages and do an intelligent layout for each board, you will not tell the difference in a blind test. (By the way, surface-mount electrolytics are not very common. Many applications still use through-hole for electrolytics.) Any differences in sound that someone has attributed to through-hole vs. surface-mount are almost certainly due to comparing a vintage effect (or even something 10 or 20 years old) with a modern version that happens to use surface-mount components. In that case, I guarantee you that semiconductor die are vastly different between the parts, thus accounting for the difference.
Either way, I guarantee you will get better tone by practicing instead of fretting about this issue.