One of my earliest builds was a Sunn Beta Bass (one channel):
After that, I wanted to build a "full" Beta Bass Preamp.
I used the Factory Schematics to create a pcb:
Then I used a milling machine to create a enclosure:
done:
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After that, I wanted to build a "full" Beta Bass Preamp.
I used the Factory Schematics to create a pcb:

Then I used a milling machine to create a enclosure:
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done:
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