Warning: Spoiler! (Click to show)
I got the Yulong DA8 this morning (after 45 days waiting for it since ordering!). I let him burning all day and obviously, I tried a few options.
- Macbook Pro late 2011 16GB RAM & Audirvana +
- Chord USB Silver Plus with pins 1 and 4 shunted to force power from the USB circuit by the DAC,
- Yulong DA8 USB therefore,
- SPL 2Control XLR (VOVOX HDG)
- 2 x renovated Threshold SA/6e XLR (Odeion Omega)
- Magnepan 3.7 (HP Odeion Omega)
Well, after a quarter of an hour, I really wanted to throw it through out the window because it was so bad compared to TE BMC-2. "A piece of ****," as you should say. I hacked it as it got hot, I passed from CD FLAC files to FLAC HD (96Khz, 192Khz and SACD ISO) and I changed the settings. So obviously, I have not finished burning it and that is why you are reading a provisional report.
Settings "Audio filters" of Audirvana all remained without correction (which is not the case of "default") except the buffer size set to max (2,000,000) and the over-sampling of "2x "(ie the software will look for the strongest over-sampling DAC value to be a multiple of the basic sampling. In our case, the 44.1 kHz, 88.2 kHz, 176.4 kHz and 352 8Khz files, are converted directly into 32bits/352,8Khz. Similarly, 48Khz, 96Khz, 192Khz and 384kHz files are converted into 32bits/384Khz thanks to "integer mode".
Go through an analog preamp is still the best solution, even if I did not say my last word ... So I bypassed the volume control of computer/Audirvana+. The Macbook Pro is on batteries.
On the DAC side:
- Input USB (352.8 kHz or 384kHz therefore, according to the files)
- Phase + (I have not played with this option)
- Filter Mode Slow
- Jitter Eliminator bypass
- Pure DAC Amplifier OFF
The jitter mode ON "eats" a lot of information. As for the filter mode, set "sharp" and musicality disappears!
So why have I over-sampled before attacking the DAC? Well, because I noticed that the DAC oversamples every info you send to him. But the over-sampling DAC is not that of the computer. Actually, if computer does nothing, it does not degrade the info as does the DAC.
Well, you know everything. Oh no, not quite all. So, with these settings,
I think we have a very serious DAC to compete, indeed. It outperforms the BMC-2 bringing more precision everywhere, especially on complex messages ... Certainly an excellent DAC... To be continued.
can't wait to hear more