[JPoole95]

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

[heiba]

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?

[avahifi]

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

[danielgk]

Google "fake opa627" before buying them on Ebay.  Buyer beware.

[JPoole95]

OK great!  Thanks a lot Frank.

John