DENAFRIPS DAC ---- Owner Impressions, Feedback, General Discussion, Questions and more....

One other customer has reported the same to Alvin. I also use a Samsung (a 2018 flagship model) and it is set to PCM, as it was with the former board. I immediately checked audio output settings once I heard the problem. I also checked different sources via Optical, same issue. At this point, it appears to be isolated to some boards. I will re-test prior to swapping out the board. My concern is driver damage at the speakers. Putting the old board back in will inform as well.

Denafrips is looking into it.

A brewing thunderstorm allowed for a temporary system shut down. I took the opportunity to re-test the Optical Input sound prior to powering off. Same issues as last night.

Since my system was down, I went ahead and swapped the original Amanero USB / DSP board back in and now have the system up and playing.

Not a single glitch with the Optical Input based Sound (performance and quality) using the original board.

I’ll ping Alvin later since it is 2 am his time.

For those WITH / OR getting the new DSP board, a few points:

1. If you are A/B’ing with the original board, give the original board at least an hour to come into song. Based on what I’m hearing, I recommend a minimum of 3 hours with 5 hours being ideal.

In other words, if you are planning a quick A/B you will not hear the original board at it’s best. I have 7+ hours of play time on the original board, as of now...if I notice any additional improvements, I’ll post accordingly.

Please note: my original board was "out" for 3 days. I can’t speak to times, if your original board is out longer.

2. I have not swapped in the new board, NOR is mine fully run in...therefore, I can not advise on the hours required for it to come on ’song’ once it is fully broken in, dependant on time "out" of system of course.

3. When you swap in the original board, make sure it is fully ’seated.’ When I removed my original board (to swap in the new board), I noticed there was very light "play" in the ’seating.’

Listening to the original board, completely / fully seated, has been a revelation. : )

[Note: as of this point in time I am only using USB in, NOS setting for my comparisons]

Note: a simple FRESH re-seating may be responsible. Similar to what happens with cables, tubes, etc.

For those of you with the original USB / DSP board, I highly recommend doing this. If you do, please share your results. Thanks.

A deep dive into the audio closet, a rediscovered OPPO 105, and a few hours later another test of the Optical Input into the NEW DSP board. Same issues / problems as when fed an Optical Digital signal from the OPPO.

Alvin asked me to check the Coax Input. Since I only have Optical and HDMI ARC on the Samsung, I tested the Coax out from the OPPO and it works fine.

As mentioned earlier, the Optical Input of the Original Board works perfectly.