I believe there is one minor issue with E50 that could, perhaps, be fixed with a firmware update.
I like to play with different settings, and upsampling PCM to DSD was one of the things that I have tried. There is no problem upsampling contents that are in multiples of 44.1 kHz resolution. The DAC also displays the upsampled frequencies correctly.
The problem kicks in when I try to upsample contents that are in multiples of 48 kHz resolution, e.g., 48, 96, 192, 384. I could not hear anything when I was upsampling contents to DSD 512. I see no error message on the foobar2k and the playback time progresses as if there is no problem. On the DAC, however, the USB indicator kept on flashing.
First, I thought the included USB cable could be faulty/underspec'ed because it looked somewhat thin. Unfortunately, swapping the cable did not fix the problem. I tried other DSD upsampling resolutions on a whim and voila! I could hear the sound. However, the DAC incorrectly displays the upsampled frequencies.
So it appears as though the DAC incorrectly recognises the next DSD resolution as the correct resolution.
So with DSD 512, the DAC probably interprets it as a DSD 1024 resolution source and denies to playback the content though it is actually in DSD 512 resolution.
I hope this is an addressable issue...
I like to play with different settings, and upsampling PCM to DSD was one of the things that I have tried. There is no problem upsampling contents that are in multiples of 44.1 kHz resolution. The DAC also displays the upsampled frequencies correctly.
Upsampled to | Displayed frequency on the DAC |
DSD 64 | 2.82 |
DSD 128 | 5.64 |
DSD 256 | 11.28 |
DSD 512 | 22.57 |
First, I thought the included USB cable could be faulty/underspec'ed because it looked somewhat thin. Unfortunately, swapping the cable did not fix the problem. I tried other DSD upsampling resolutions on a whim and voila! I could hear the sound. However, the DAC incorrectly displays the upsampled frequencies.
Upsampled to | Displayed frequency on the DAC | Correct frequency |
DSD 64 | 5.64 (eqiv. to DSD 128) | 3.072 |
DSD 128 | 11.28 (eqiv. to DSD 256) | 6.144 |
DSD 256 | 22.57 (eqiv. to DSD 512) | 12.288 |
DSD 512 | No sound & flashing (perhaps sees as DSD 1024) | 24.576 |
So with DSD 512, the DAC probably interprets it as a DSD 1024 resolution source and denies to playback the content though it is actually in DSD 512 resolution.
I hope this is an addressable issue...
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