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Op-amp for Super FET Two preamp

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JPoole95

Op-amp for Super FET Two preamp
« on: 15 Apr 2019, 09:01 pm »
I inherited a clean PAT4 Super FET Two preamp but it does not work.  Looking inside, I noticed the op-amps were missing and wanted to know what op-amp number could be used in this old unit in hopes of getting it running again.

Thanks for any info!  John




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heiba

  • Jr. Member
  • Posts: 47
Re: Op-amp for Super FET Two preamp
« Reply #1 on: 15 Apr 2019, 09:25 pm »
I have something similar, an AVA Super Fet Pat-5 from 1980. It works, and I know one should not fix it if it ain't broken, but can the more modern OPA2134 chip be used?
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avahifi

Re: Op-amp for Super FET Two preamp
« Reply #2 on: 15 Apr 2019, 10:50 pm »
OPA627s should work fine.

The old preamp needs four of them.  2 in line stage, 2 in phono stage.

We have them available for $15 each or 4 for $50 plus $10 shipping.

Frank
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danielgk

  • Jr. Member
  • Posts: 73
  • AVA engineer/technicion
Re: Op-amp for Super FET Two preamp
« Reply #3 on: 16 Apr 2019, 12:41 pm »
Google "fake opa627" before buying them on Ebay.  Buyer beware.
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JPoole95

Re: Op-amp for Super FET Two preamp
« Reply #4 on: 16 Apr 2019, 03:47 pm »
OK great!  Thanks a lot Frank.

John
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