2SD188A or 2SD46 Output Transistors Anyone?

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afroaudio

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I have a Sansui AU777 that has had its output transistors (Sony 2SD46 originals) replaced with modern 2N3773.

Unfortunately there seems to be a low freq oscillation occurring now :(

Just wondering if anyone might have in a spares bin: Sony 2SD46 or apparently these amps also left the factory with NEC 2SD188A as well later in production.

 
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