I think that most evenings Ray good thing with these threads , we can add anything whenever its convenient .Ray P wrote: ↑Tue Feb 13, 2024 9:53 pm I don't know where this evening has gone!
I prefer the JLSounds USB board to the Amanero but it would complicate matters with connections to the PCM2DSD module. I made some interface boards to hook a JLSounds board to a ValveDAC that I bult for a friend (Marcel's designs use the Amanero pattern header on their inputs) and it worked really well but that used HQPlayer for upsampling. The interface board also has sample rate indicators for the DSD rate and whether the data is 44.1KHz or 48KHz family.
I have found these are very good power supplies for my Decoder projects, Salas shunt regulators didn't give any discernible improvement so I think in this context low-noise is the important thing to consider. These supplies are very space efficient too.
https://www.ldovr.com/category-s/114.htm
I think the most scope for exploring improvements with the RTZ is the output filter and when I get back to the RTZ (currently working on several amplifier projects) I want to try some different arrangements - top of my list is the circuit in post #7 of this thread, using 6SN7s.
Just some quick thoughts.
Love the look of that Beagelbone black , I need to look into that tbh I was expecting a huge PC was needed to run HQ player .
I'm definitely preferring running the Amanero from a separate supply ,even a basic LM317 would probably be better than the USB supply .
Thanks for the regged PSU links, the LT3045 are nice and compact certainly take less space up compared to what I'm using now . I tried one of Salas shunts years ago although it was one of the older versions , I preferred the PH Z1A's but they was quite expensive .
After I've tried swapping out the NE5532's to OPA1678 and having a listen I'd like to try bypassing the last stage of Dac3filter too , think details for that on diyaudio .
Look forward to seeing how you get on with the valve output stage , did you ever try the discrete version of the CD enhancer ? I tried it with a Pioneer PDS904 quite a few years ago