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Ultimate ultra hifidelity opamp?
Ultimate ultra hifidelity opamp?
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Old 20th February 2013, 06:05 PM   #1
Fusion916 is offline Fusion916  United States
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Default Ultimate ultra hifidelity opamp?

Any opinion on the best current hifi opamp? Does not need huge rail voltages, at most +/-12V is fine.
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Old 20th February 2013, 06:11 PM   #2
Boscoe is offline Boscoe  United Kingdom
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LME49990?
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Old 20th February 2013, 06:13 PM   #3
paulb is offline paulb  Canada
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Try the XYZ12345, but be sure to bias it into Class Q operation.
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Old 20th February 2013, 06:24 PM   #4
hpeter is offline hpeter  Slovakia
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Ultimate ultra hifidelity opamp?
Quote:
Originally Posted by paulb View Post
Try the XYZ12345, but be sure to bias it into Class Q operation.
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Old 20th February 2013, 07:15 PM   #5
Fusion916 is offline Fusion916  United States
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Why no serious replies?
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Old 20th February 2013, 07:17 PM   #6
Fusion916 is offline Fusion916  United States
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Quote:
Originally Posted by Boscoe View Post
LME49990?
Does this not come in DIP packaging or does digikey just not carry them?
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Old 20th February 2013, 07:26 PM   #7
jcx is offline jcx  United States
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ill formed question

what circuit? - manufacturers don't make the thousand or more active part types for no reason - in fact so many part types exist for hundreds of reasons

and "ultimate fidelity" is subject to interpretation - even for engineering specs, are you interested just for text book human psychoacoustic frequency, dynamic range limits

Last edited by jcx; 20th February 2013 at 07:45 PM.
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Old 20th February 2013, 07:37 PM   #8
hpeter is offline hpeter  Slovakia
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Ultimate ultra hifidelity opamp?
google answers only lme family if asked "High Fidelity Operational Amplifier"

LME49713
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Old 20th February 2013, 07:38 PM   #9
Ian Finch is offline Ian Finch  Australia
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It would be a big help to tell us what you want the opamp to do. You can't hope to have the best op amp,
but you could find the optimum affordable one if you know what it's needed for.

There is no best anything without a purpose and a measure of suitability -
so, is this bgoing to be a relay driver, a regulator, amplifier servo, an input for a low or high level impedance,
an inverting or non-inverting buffer or a run-of-the-mill, line level audio amplifier? Then, what gain is required
and what is the input voltage level?

'Shouldn't be too hard to find that out.....
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Old 20th February 2013, 07:39 PM   #10
Williams Audio is offline Williams Audio  Jamaica
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Look at Douglas Self pre amps designs.
Then you can see Analog Devices audio applications notes, they have very good op.
Best regards,
williams
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