That's some epic post there Craig! Thanks a lot for the feedback
.
It looks really promising to me!
I've only had the SA-1 for a week and I'm still struggling to get the sound out of my head on my setup (HE-6 + EF-6) but it's not an issue with the DAC; the Chord QuteHD gives me the same result.
It's definitely better than the issues I had when I was in France (glary and shouty sound, even on the darker HE-5LE which was very fatiguing and fuzzy sound as in no imaging at all).
Only once, for 2 month, I could get a wonderful sound out of my setup. The setup was: mom's laptop -> NFB-27 (USB) -> SA-31 -> HE-5LE. I could hear "everything" and picture any single instrument in the scene with a very good definition. The scene was out of my head, in front of me (pushed back) and I had a very clear picture of it (a big picture considering I had both Audio-GD Amp and DAC).
I could have lived with this and be done with the upgraditis but I decided to buy my own laptop, a power regulator and DIY power cable. From this point in time, I could never get that sound back! Even with the original power strip, power cord and my mom's laptop it was a no-go!
This is driving me crazy. I'm quite sure I didn't get the most out of the Eximus DP1, the Ciunas and all the DACs I bought in the meantime.
Now that I moved to the US, I built a new setup which I hoped would get rid of all this past issues. It's definitely much better (no glare, no shouty sound) but the soundstage is still in my head and the center of the stage is fuzzy: I cannot picture myself the singer, it's too close from me and I cannot "squint" enough (with my ears
) to see it properly. So it's still miles away from the good old times with NFB-27.
I ordered new power cables (though I highly doubt they played a role in that, honestly, since I used the no-name ones on a regular power strip back in the glory days...) and I now use a DX50 with coax out feeding the Chord or the SA-1 (custom cable from BJC) to stay away from USB audio.
Anyway, back to the SA-1. I can still appreciate the level of details and, especially, the tonality. I really really like it with the HE-6!
It's certainly not as dark as when I tried the Ref-5.32 on my SA-31 + HE-500. I won't compare the SA-1 and the Ref because the setup are obviously completely different but I don't feel the sound is lacking dynamics here (which was the case with the Ref5). To be honest, I feel like there's a veil to the sound compared to my QuteHD and I have high hopes for the SA-2 in that regard!
The bass response is very good too but won't extend as low as either the Chord or the NFB-27 (it lacks sub-bass impact in comparison). The texture is where the R2R really shines (be it bass, mids or treble).
As expected, it's a very organic tone that just sound real (minus the minor veil I mentioned). Only the NFB-27 could give me a similar organic sound. That's the signature of all TOTL DACs from Kingwa but the SA-1 is not one of them, yet it has it too. I'm eager to hear the SA-2 and the Master-7 now! The latter should have a similar tonality to my good old NFB-27 (neutral + dynamic) with even better and overall technicalities.