![]() ![]() My answer to that is that Schiit is on record as saying that they make changes to their designs without notifying customers or changing model number/revision. This kind of thing better be part of the "pass/fail" testing of DACs before shipping.Īnd yes, I am aware of other measurements of Schiit Yggdrasil showing other performance. ![]() Instead of creating work for me and their owners, manufacturer needs to replicate my tests and show that there are no problems.įor now, if you have done the Gen 2 analog board upgrade, I would contact Schiit and ask them whether they verified frequency response output before shipping it to you and if so, they can send you paperwork for that. I am sure we will be told that these two DACs are broken and that they need to go to service. High-end audiophiles like to play high-resolution content and this is a DAC that struggles with 16-bit content let alone higher bit-depth. Even if we put them aside, what I measured is simply not competitive. While the two versions of Schiit Yggdrasil produce the best performance I have seen from a Schiit DAC, they unfortunately point to performance problems that should not be there. I also tested a Bryston BDA-2 with the same excellent outcome. All that was done was I moved the cables and hit "go" again to remeasure. I should note that in the same sitting I measured the Berkeley Alpha DAC where we have ruler flat response. I am at a loss as to how a DAC gets released which some frequency response error. Same results were confirmed in round two. I couldn't believe a solid state DAC in this day and age can have such a frequency response error. This was the main reason I wanted to remeasure the two Schiit Yggdrasil DACs. Wonder if there is a manifestation of this in THD+N we saw earlier where Gen 2 unperformed Gen 1 analog board. Whatever the cause, it is part of the output of two independent channels. Note that these are stereo sweeps so both channels behave the same. ![]() So this is right at threshold of hearing. But Gen 2 board starts to drift down at some 300 Hz and by the time you get to 10 Hz, it is down by half a dB.Ĭontrolled listening tests by Toole/Olive show that low frequency deviations that are this broad have a threshold of hearing of 0.5 dB. The Gen 1 board has a small roll off < 20 Hz which we could ignore. But if you look at the two curves at the bottom, both of which are for unbalanced output, we see problems. The top line is the Gen 2 analog board in balanced mode. Here I am showing the difference between same test run over S/PDIF generated by my Audio Precision Analyzer and the Gen 5 upgraded-USB only Schiit Yggdrasil: You should only see a main spike at 12 Khz which represents our original tone. Let's start with our favorite test of jitter and noise using 24-bit/48 Khz J-Test signal. So I am going to show comparison to other DACs in a separate post although some of that is here too. There is a lot of data here with two versions of these DAC. Please read my tutorial on my setup and how these tests are conducted: I know all of you are anxious about seeing the measurements of these two DAC variations. Yes, you better feel sorry for me or else! Each trip cost me 150 miles of driving for a total of 300 miles. After seeing some oddities I asked if I could remeasure both of them and both owners were kind enough to let me do that in a more relaxed setting. I had to do my testing while other activity was going on so a bit stressful with some potential for error. Both of these units were made available to me at our local audiophile society meeting.
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