Reply To: The well segmented dac-24 bit 384khz thermometer/r2r sign-magnitude discrete dac

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#1829
The Well Audio
Participant

I’m noticing shortly after turning everything on the DAC puts out 2.5V DC for about a second, audible as 2 pops.

Is this normal?

Only thing I could think of is not following any turn on sequence for XO, FIFO and DAC supplies, everything turns on simultaneously from mains switch.

When the DAC starts, their switches are in unknown state until the FIFO begins to send data.
Some DC at the output of the DAC is possible, because the FIFO takes longer than the DAC to start up.

So Kazuma’s suggestion is a good practice, the ampli should be the last to be turned on in order to avoid DC to reach the speakers.