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Old 21st April 2013, 12:18 PM   #351
regal is offline regal  United States
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it is a low pass filter. If you trust your cap not to short you can use one 1/mu smaller between grid and anode instead.

Today I would recommend a more linear tube with more gain like the 6e6p.
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Old 21st April 2013, 07:19 PM   #352
McGyver is offline McGyver  Poland
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Thanks for reply. Instead you can also use a cap in paralell to anode resistor as Thorsten Loesch do.

I'm just working on an oversampling AD1865 DAC with SM5842 digital filter passive I/V and tube gain stage. When I'll finish it I'll post the results and some photos.
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Old 17th November 2013, 04:08 PM   #353
roger57 is offline roger57  Canada
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Default Using the Trim/Offset on the AD1865N


I see there's been no post here for a long time....hope I'm not alone out here!!

Question: Has anyone used the L/R TRIM pins on the AD1865N (will be using the K version) and noted a perceived and/or improved sound quality? To test this I imagine it will take a test CD with tones low enough to establish distortion at 60dB down?

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