Any way to lighten the mood can anybody guess what this is? And no its not "The Bear"
The bottom of your amp case with tool path for CNC.
The problem is that all we know is that you *think* you hear a difference. Our minds are rather good at fooling ourselves - remember that famous Feynman quote, "The first principle is that you must not fool yourself – and you are the easiest person to fool."? If you think you hear or something, it will feel real enough - you will "know" there is a difference - but the difference might not be real.
By far the most important things to learn about in audio (and pretty much any science) is the whole fascinating field of cognitive biases - a real eye-opener, if you excuse the pun...
Why don't they just make 2 opamp's single and dual then if they all sound the same. There should be no reason to choose anything other than the NE5534 or 5532
Can you please explain to us the chain of logic that leads from "we don't know for sure if A and B actually sound different in this application" to "all opamps are the same"?
Depends on your definition of "real". Placebos do of course cause real differences in the electrochemical impulses in your brain neuron pathways, even if there are no differences in the air waves reaching your ears.
Well you always seem to think that components should all sound identical, if the datasheets show excellent specs. Well the datasheets don't tell the full story. They usually highlight the areas that are the strongest, and don't mention the weak areas.
What you think I seem to think might be another case of cognitive/confirmation bias.
As to specs, yes, you need to know what specs to look for.
hypex ncore
Some of the discrete opamps are much better under 100hz. But you don't see this spec on the datasheets. And when frequencies under 100hz are running through them, performance throughout the full range is affected. You don't see this with a 1khz test signal.
Some of the discrete opamps are much better under 100hz. But you don't see this spec on the datasheets. And when frequencies under 100hz are running through them, performance throughout the full range is affected. You don't see this with a 1khz test signal.
You are right that very few datasheets have an entry for "goodness below 100 Hz".
So what is "better"? What aspect of performance differs? How is the performance throughout the full range affected? Are you talking about intermodulation?
You are right that very few datasheets have an entry for "goodness below 100 Hz".
So what is "better"? What aspect of performance differs? How is the performance throughout the full range affected? Are you talking about intermodulation?
I don't know all of the details, but there's much more going on when music is playing through them, than their tests which are specifically chosen to highlight the strong area, and ignore the weak. From what I hear, the problem with IC opamps is heat generated from low frequencies affects the whole range. Discrete are much better in this regard. The only discrete opamp I've found that has a decent spec sheet is this one:
http://www.sonicimagerylabs.com/pro...e_HD_OpAmp/994Enh_DiscreteOpAmp_Datasheet.pdf
Internal heat is of course less of an issue with discrete opamps, but they come with other issues. In any case, I would not base design decisions on unclear hearsay.
It seems like if you build something flawless, it would only appeal to a very small audience. It's colorations that these guys want and associate with "musicality" however I have a different approach to inducing these colorations to the sound via DSP rather than hardware. This way it can be turned on and off, or changed out with a push of a button, rather than a hardware swap. But of course this is a very complex system that must be designed as a whole to work properly.
I was using the word 'real' there as placeholder for your definition as the word originated in your post. So my oversight not to use the scarequotes. What's your definition for it?
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