Adding to this, it's pretty clear that there's no simple logic that explains why the sonic result/output of a typical recording chain --> mastering chain which likely contains assorted who knows what for opamps, maybe dozens of 5532s or 4558s, and electrolytic caps could possibly be significantly altered by the imposition of a single opamp playing buffer at the output side of a DAC!
Absurd!
Absurd!
Hi bear,
Sometimes an op amp is used in a location were it isn't too happy. Look at the reconstruction filter in your DAC for example. There are many op amps that would misbehave in that situation, and others that can still operate as expected there. So maybe this is more about using the correct parts (there are always more than one part) in locations that need those products. Applications that require high common mode rejection is another application where people have to read the darned datasheet before plucking any op amp out and sticking it in a circuit (op amp rolling).
A lot of this is magic to folks who don't understand these things, or should I call it "art". But I find that if you read the data sheets and use the correct parts, things tend to turn out well. The steely-eyed technical person tends to win out over the "magic beliefs" group. We see that time and time again in these forums.
-Chris
Sometimes an op amp is used in a location were it isn't too happy. Look at the reconstruction filter in your DAC for example. There are many op amps that would misbehave in that situation, and others that can still operate as expected there. So maybe this is more about using the correct parts (there are always more than one part) in locations that need those products. Applications that require high common mode rejection is another application where people have to read the darned datasheet before plucking any op amp out and sticking it in a circuit (op amp rolling).
A lot of this is magic to folks who don't understand these things, or should I call it "art". But I find that if you read the data sheets and use the correct parts, things tend to turn out well. The steely-eyed technical person tends to win out over the "magic beliefs" group. We see that time and time again in these forums.
-Chris
Not before the reconstruction filter... (assuming there was one)
And if you find that the original design is not somehow flawed in implementation, then the original chip can be expected to perform properly... then what?
And if you find that the original design is not somehow flawed in implementation, then the original chip can be expected to perform properly... then what?
Hi bear,
Some chips are better than others for a particular application, that's all. Mind you, there is always expectation bias. That figures heavily in the op amp rolling camp. Sometimes there just isn't anything to hear.
-Chris
Some chips are better than others for a particular application, that's all. Mind you, there is always expectation bias. That figures heavily in the op amp rolling camp. Sometimes there just isn't anything to hear.
-Chris
Don't care about any "camp".
Personally I come in with no expectations other than I hope the results equal or exceed my aims, and that getting to the result is a simple, fast and painless as possible.
Sure, some chips are "better for a particular application" is all well and good - but unless there is some way to make this determination in advance it comes down to empirical and iterative trials...
Regardless, the main questions in this thread hang high in the tree... glistening and mocking those watching from below! 😀
Personally I come in with no expectations other than I hope the results equal or exceed my aims, and that getting to the result is a simple, fast and painless as possible.
Sure, some chips are "better for a particular application" is all well and good - but unless there is some way to make this determination in advance it comes down to empirical and iterative trials...
Regardless, the main questions in this thread hang high in the tree... glistening and mocking those watching from below! 😀
Hi bear,
I does come down to some experience and reading the data sheet. Personal experience is valid, and maybe why the old guys tend to get paid more.
-Chris
I does come down to some experience and reading the data sheet. Personal experience is valid, and maybe why the old guys tend to get paid more.
-Chris
Nah, the data sheet doesn't adequately predict the performance.
But the questions of interest to me here revolves around this A B C thing, per what I wrote. Perhaps I will go off an ponder this down in the Fortress of Solitude...
But the questions of interest to me here revolves around this A B C thing, per what I wrote. Perhaps I will go off an ponder this down in the Fortress of Solitude...
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