Reply To: Saturn audio hissing

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January 7, 2018 at 11:46 PM #18401
prof_abrasive
Participant

The PNP and 2x NPNs? That’s on the VA7 and VA13 also. I think that’s a startup muting circuit. Shouldn’t affect sound in my reading.

The PCM1710U datasheet seems to suggest a 3rd order active lowpass on the output. The VA13 schematics show a single pole at 140kHz instead!