Just updated to v7 on my DAC19 10th Anni today. Have not gotten into sound yet coz facing a problem...
Existing setup: PC-> usb-> Gustard U12-> coax-> DAC19-> rca-> amp
Music app: Foobar
OS: Win 10
Before the update, there were no issues. After the update, whenever I play any track, before the sound comes in, there will be a burst of static noise. Even if I let a track finish playing and naturally move to next track, there will be the burst of static noise. Noise is there whether I select DS, ASIO or WASAPI. Noise is also there with a different player app.
The duration of the noise is somewhat dependent on the duration the track time starts ticking before the first sound is heard. Because of this, some tracks can have a 2-3 seconds long cracks.
At first I thought while the song is playing, there isn't any noise. However just now I just let a few tracks run longer... there are occasional cracks here and there.
I emailed AGD straightaway and Kingwa asked me to try with another PC. I tried with a Win 7 laptop and got the same result.
I googled a bit after my friend suggested it could be IDtag issue. Used MP3tag to remove tags from some tracks. Problem persisted.
Then I tried on my original PC... connect USB direct to DAC19, bypassing the U12. There is no more such noise. I tried toggling a few times and was quite repeatable. So now I'm tentatively back to USB direct.
Anyone encountered the same problem?
I have just placed an order for Singxer SU-1 last week. Now I'm not sure whether the problem lies with the SPDIF onboard, drivers, or what. Hence I'm also hesitant to flash back to original firmware (I hope it wouldn't become a permanent problem even after flashing back!)