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Old 9th November 2012, 08:00 AM   #1
cotdt is offline cotdt  United States
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Default Has anyone ever had experience with MUSE opamps?

The audiophile community has given these opamps great reviews, and I was wondering if anyone here has ever tried them:
MUSES01 NJR | MUSES01-ND | DigiKey

The datasheet specs look similar to every other opamp. I'm curious what all the hype is about.
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Old 9th November 2012, 08:26 AM   #2
cotdt is offline cotdt  United States
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It seems to be designed specifically for audio. I'm thinking of using it for input stage of an amp. A friend in another country said that it is a great value for the price.
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Old 9th November 2012, 12:19 PM   #3
jaycee is offline jaycee  United Kingdom
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Made by JRC who make opamps used everywhere

MUSES Official Website

I guess they had to do something to compete with Burr-Brown from TI
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Old 9th November 2012, 12:39 PM   #4
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I would want some better detail and explanation as to how this opamp gained "great reviews" and the bona fides of who wrote them.

Some products with anonymous reviews solicited from websites, turn out to be trash with the secret ingredients of packaging, copycat
cool brand name and good, old fashioned BS.

Given the ease of swapping in a DIP8 socket and making no other circuit changes in say, a line level amplifier, what could we expect it
to do for audio, if it can only add its $50 worth of relatively high THD?
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Old 9th November 2012, 01:19 PM   #5
wahab is offline wahab  Algeria
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The 0.4ppm THD is specified at 1Khz and gain of 1 , not exceptionnal.
At higher frequencies it s inferior to a NE5532 wich has also half the noise
of this JRC wonder....

http://semicon.njr.co.jp/eng/PDF/MUSES8920_E.pdf
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Old 9th November 2012, 03:55 PM   #6
lineup is offline lineup  Sweden
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What I would like is some schematic.
You can fool anybody with things, but the schematic will tell if there is something good.
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Old 9th November 2012, 04:32 PM   #7
cotdt is offline cotdt  United States
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Quote:
Originally Posted by wahab View Post
The 0.4ppm THD is specified at 1Khz and gain of 1 , not exceptionnal.
At higher frequencies it s inferior to a NE5532 wich has also half the noise
of this JRC wonder....

http://semicon.njr.co.jp/eng/PDF/MUSES8920_E.pdf
An opamp like LM4562 does have better specs. However, they sound bright and metallic compared to other opamps and discrete circuits when used for voltage amplification. I'm most interested in the sound.
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Old 9th November 2012, 04:33 PM   #8
cotdt is offline cotdt  United States
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Quote:
Originally Posted by Ian Finch View Post
I would want some better detail and explanation as to how this opamp gained "great reviews" and the bona fides of who wrote them.

Some products with anonymous reviews solicited from websites, turn out to be trash with the secret ingredients of packaging, copycat
cool brand name and good, old fashioned BS.

Given the ease of swapping in a DIP8 socket and making no other circuit changes in say, a line level amplifier, what could we expect it
to do for audio, if it can only add its $50 worth of relatively high THD?
Stereophile and 6moons gave it rave reviews of the opamp as part of a $400 DAC upgrade, even though the opamps themselves are much cheaper. They said it was a great value.
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Old 9th November 2012, 04:58 PM   #9
jaycee is offline jaycee  United Kingdom
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I dont give much truck to the opamp fetishism thing audiophiles have. For me, the NE5532 and OPA2134 (for FET input) are perfectly transparent, implemented correctly.
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Old 9th November 2012, 05:03 PM   #10
cbdb is online now cbdb  Canada
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$50 each!!!! I wonder what generic opamp they relabelled.
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