At this point the unit was going to use 'passive' summing with transformer inputs, with 1 gain stage using a DOA and the other tube based. After playing around with the ideas for a while I went ahead and produced a prototype PCB of the input section to test the concept.
A little daunting as it was the first PCB I had ever had made and I was a little unsure ordering it from PCB Cart in China, but it came a lot faster than I expected and looked top notch.
The PCBs all worked out except that the Cinemag input transformers had to be mounted on the bottom as I messed up the footprint. Not too bad for my first attempt.
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