On my journey to optimal sound I yesterday received an SDTrans384 (a minimalistic SD transport). I owned it before but a year ago it sort of exploded after being fed with a much too high voltage (human error, phfew...), and I really missed it since. It is an inconvenient device (only plays wav and dff files, only I2S and BNC/spdif out, only accepts small-size fat32 sd cards), but I know of no better source when fed by a good LPS (with the right voltage that is). For me it is a benchmark and sanity check when investigating expensive streamers such as the AQ Linq or MU1. This one costed me € 350 2nd hand with upgraded clocks.
I compared, with the SDTrans384 playing:
(1) PCM176 --> spdif --> Spring 3
(2) PCM176 --> I2S --> Spring 3
(3) DSD256 --> I2S --> Spring 3
(4) PCM176 --> spdif --> DI-20HE --> I2S --> Spring 3
No network involved. SQ to my ears: (1) < (2) < (3) < (4), the first confirming my earlier preference for DSD with just the Spring 3. However I now prefer (4) with PCM.
I like (3) and (4) even better than PureAsioPlayer streaming via Diretta.
Alas the combination of SDTrans384 + DI-20HE + DSD is impossible. For that I would need a DDC with I2S in- as well as output.
So, after preferring DSD for the last 6 months or so, I am now back to playing PCM with setup (3).
The effect of the DI-20HE is wonderful. It creates such a richly saturated texture.
There is one flip side: the minuscule glitches that I remember when using the spdif input to the DI-20HE are back. I never could get rid of them. They are so few and far between that I could live with them, but any advice would be welcome.
The positive effect of the DI-20HE is further enhanced by a (not yet broken in) HE-1 that I have on loan from a friend for the weekend. And in a few days a used HE-1 Vacuum will arrive, so it is a great time for comparisons.
Next will be an audition of the R7HE (EC version) to compare it with my Spring 3 L2. I hope to be able to do that at home, as then I can use the Afterdark clock that is hooked up to the DI-20HE also for the R7HE.
Sorry for the somewhat OT rambling, but the DI-20HE remains the spider in this web.