Originally Posted by
lurcher
I left it on battery, I think it would be hard to get a low noise supply that was floating in the way a battery does.
I didnt change the transistors thats what I found under the silicon, I suspect they may be the same types BD380 (I think, the numbers were rubbed off) just different case.
I wonder if mine could be later - may explain the lack of potting compound...
I look forward to developments with interest
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