Sergio,
Thanks for the report!? Very interesting, and I'm assuming that the Audio-Technica patent is long expired at this point. The outside transistor on my sample also had "3FN" on it.
-Scott
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On 7/5/24 09:59, sergio_logic via groups.io wrote:
So here is the full non-CORE DPA 406x teardown.
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---- Scott Helmke ---- scott@... ---- (734) 604-9340 ----
"I have ceased distinguishing between the religious and the secular,
for everything is holy" - Joe Henry
