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In Reply to: RE: What he said! posted by RickeyM on September 10, 2007 at 16:00:34
... but a lot of the paramters for the LM4562 are quite nice. And in the end, there is no comparison between the musical presentation between the OPA2604s and these. IMO.
One very strange thing I noticed (not the first time I have hear this!); it took quite a while (like 50+ hours) before they really settled in.
Someone PLEASE give me an explaination. I work on semiconductors, and I have no clue why the sound quality would change .... and no, I don't think it is me getting used to their sound....
jim (trioid)
Follow Ups:
Are you saying the 2604 is not musical??
I just recieved the 627 and replaced a pair of 604. So far, the 627 sounds more refined than the 604. And also more ambience/transparency but I see that clinical/clear detail is not its strong point.
This is in the filter/buffer position.
I plan on replacing NE5532 with LM4562 in the IV position.
Also will compare the LME49710 to 627 in the filter/buffer.
No Sir, I am not saying the 2604 is not musical. Subjectivity as much as possible aside, I like the detail and 'bass punch' of the 4562 better than the 2604. {I would hope that we got somewhere with op amps in the past 8+?? years. Me thinks so.}
IMO the whole system you are listening to has to add together to get what you want. The OPA627 is one fine chip (on paper). Musical? I cannot say since I have not had the pleasure of trying one.
GIC - the Ne5532 is also a very fine chip, I think, even though it is cheap. But again, I did not replace it, so I will be watching for your opinion on that. Even though the 5532 is a 'jellybean', it has some impressive characteristics.
Cheers,
Jim
...and they're still good chips.
At somewhere like $8 each they were more well respected.
CAC
good luck.
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