Modded Lawrence Hong Kong DAC
Change the following resistors R8,R9,R14,R17 to 30k
And
these caps C32,C33,C34,C35 to 150pf
Changes on the DAC
R8,R9,R14,R17 to 30kC32,C33,C34,C35 to 150pf
Added pulse transformer on coax SPDIF
Changed Opamp to lm 4562 after adding pulse transformer
Lifted pin 2 of the CS4397 and connected it to pin 16 of the CS8416 to get 192khz to work.
Changed all important caps to low ERS Panasonic FM.
Changed the external filter to correct values, R2 becomes 3k, C22 becomes 22nF, and C23 becomes 1 nF.
It now sounds excellent!
Also check out these modifications http://www.djuke.nl/index.php/audio/1-projects/6-dac
Im on my way to add an discrete output stage and just override the opamps. Just some small bugs that needs to be fixed.
Discrete DAC output stage
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