Posted this on AC with no response. Vega upsamples everything in PCM to 1.5MHz...
I use an Adnaco USB-over-fibre solution and EXACT mode. I always enable software-upsampling in J. River M<edia Center 20 to 352kHz and use type 4 filter (I think this mode makes most sense for 352kHz based on the graphs and info in the Auralic manual).
I never have dropouts.
Someone suggested let the Vega do the upsample instead of J. River.
So today I decided to test the native sample rate, and I am shocked at the difference in sound. Native 44kHz dropouts results in dropouts here and there, AND the sound is so dull - I swear it is like a different recording.
I leave the Vega powered on all the time, and rarely put it to sleep, or power it off.
I just can't believe how different the sound is. Native sample rate sounds like a bad mp3. Type 4 and software upsampling is so much more clean, crisp and the vocal jumps out. I was using a FLAC of Percy Sledge "When A Man Loves A Woman" (from The R & B Box: 30 Years of Rhythm & Blues - Volume 6 - The End of the Golden Age 1966-1972). It's actually a really good track to test this as the recording is so-so.
I'm checking my JRiver settings now because it's unreal, like an EQ is on, a HUGE veil coming down over the sound with the native rate. Matched the zone settings and not sure why there is such a big difference in fidelity. I'll have to test with more PCM material later.
thanks,
Jon