Thanks for the schematic diagram, Steve.
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Some days ago, I stumbled upon some nice 3D X-Ray images of what the author claims to be an ALA1530 amp, but that version uses only a couple NPN transistors. Do you know when did they redesign the amp with j-fets and how does it compare to the simpler bipolar version ?
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73,
Caaarlo.
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Caaarlo