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Rotel RC03 peramp upgrade !!
Rotel RC03 peramp upgrade !!
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Old 29th November 2014, 01:52 PM   #1
mprivitera1 is offline mprivitera1  Italy
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Default Rotel RC03 peramp upgrade !!

Hello everyone,
I own this economic Rotel preamp RC03. It has two opa BB, OPA2134 and OPA2604 a. If I replace these with other opa best what to take?
Advice thanks

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Last edited by Mooly; 3rd December 2014 at 08:00 AM. Reason: Fix pictures
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Old 2nd December 2014, 10:02 PM   #2
ivandezande is offline ivandezande  United States
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I would say leave them. Those aren't cheap op amps by any means, and rolling op amps almost never does anything. Look at more sensible upgrades, e.g. the power supply.
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Old 2nd December 2014, 11:00 PM   #3
ticktock is offline ticktock  Scotland
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Quote:
Originally Posted by ivandezande View Post
I would say leave them. Those aren't cheap op amps by any means, and rolling op amps almost never does anything. Look at more sensible upgrades, e.g. the power supply.
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Old 3rd December 2014, 07:36 AM   #4
mprivitera1 is offline mprivitera1  Italy
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Quote:
Originally Posted by ivandezande View Post
I would say leave them. Those aren't cheap op amps by any means, and rolling op amps almost never does anything. Look at more sensible upgrades, e.g. the power supply.
hi,

the power supply does not seem so bad .I think that opamp inside are overvalued for the music ....
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Old 3rd December 2014, 08:03 AM   #5
Mooly is offline Mooly  United Kingdom
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Rotel RC03 peramp upgrade !!
You could try the LM4562 for both. There is no "best", but opamps certainly do change the sound quality in subtle ways.

If you do swap opamps then you need to back those changes up with at least basic tests to ensure its all stable. 99% chance it will be a straight swap but always confirm by measurement to be certain.
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Old 3rd December 2014, 09:51 AM   #6
mprivitera1 is offline mprivitera1  Italy
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Quote:
Originally Posted by Mooly View Post
You could try the LM4562 for both. There is no "best", but opamps certainly do change the sound quality in subtle ways.

If you do swap opamps then you need to back those changes up with at least basic tests to ensure its all stable. 99% chance it will be a straight swap but always confirm by measurement to be certain.
..ok,thanks...
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