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Schematic question - what this cap is for ?

Hi, tube folks,

Anyone can tell me what this cap is for - marked with red circle, C2, 0.01 uF, connected between BIAS supply and cathode of 2nd output tube?

It doesn't seem to be for high-frequency cut off or RF suppression.

This is Sansui AU-111 schematic.

Thanks in advance for any suggestion(s).


  • 111-schematic.jpg
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