Need Gates M6034 preamp boards or replacement suggestions

[stubbyfex]

Hello! I'm a new guy here, but have been an electronics tech for the past 50 years.
A few decades ago I acquired a Gates President Console. It has only two of the M6034 plug-in preamp cards.
My question is: Should I make clones for the missing boards, or should I use something like an API preamp module?
Or even an opamp based preamp?
Any suggestions? Thank you very much in advance!

 

[Brian Roth]

Welcome aboard! Looking at the schemo I see they used germanium PNP transistors. Those might be tough to source.

Bri

 

[emrr]

I would only find or clone those if I was being 100% purist about it.

 

[stubbyfex]

Thank you for the suggestions! I found a very informative webpage about restoring a couple of similar Gates Executive consoles that use the same preamp boards. Here is the link: https://whitakeraudio.com/category/equipment-restoration/gates-executive-console/
This man did an exemplary job of restoration and even designed a new PCB using modern transistors and Hammond input transformers.
If anyone is interested he has the schematic and PCB files for download! Problem solved! I plan on building a few.