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In Reply to: RE: Singxer SU-1 posted by cfraser on May 19, 2016 at 10:22:04
Great question.
I don't pretend to know the answer but...
My Audio-GD Master 7 and Master 11 DACs both currently uses the Amanero card for USB > I2S conversion and those who have swapped out the Amanero for the F-1 in my brand of DAC claim considerable improvement with the F-1 board installed.
However...
In the Audio-GD product line, great attention (and weight) is paid to issues of Power Supply. And, the designer powers the Amanero card from one of the many linear power supplies inside the DAC. The F-1, OTOH, is powered by the USB source.
Further complicating this issue would be the use of a USB 'gadget' like the REGEN, because then the internal (or external) F-1 would then be powered by the REGEN, not the USB source, and totally dependent on the REGEN's power supply(stock or after-market linear PS).
So at the end of the day, it would appear to be all about 'F#$%ing Gadgets', as inmate Cut-Throat would call them. :-)
Follow Ups:
Yes, I was wondering about that, I asked Sordidman about the microRendu-> F-1 connection re PS.
I guess you could always disconnect the PS on the SU-1 *if* you were just going to use the RCA/BNC S/PDIF output. Or could you? At first I thought the SU-1 would essentially be a larger F-1 that's "wired out", with additional circuitry to fire up the AES/EBU output and accomodate the I2S/HDMI connector signal selection. I have no idea how it is. IMO it would be a good idea to have jumpers to separate the non-F1 circuitry PS from the F-1 circuitry PS so you could have the option of powering from the USB bus if that was suitable.
to my DAC's S/PDIF or l2S input I would certainly want the new SU-1 with it's separate, hopefully somewhat decent power supply.
OTOH, if the input is from a Regen with UpTone's new linear PS or a uRendu with an equally good linear PS, perhaps one might be better served with the F-1 which takes its power from the USB bus.
If I'm way off base here, please feel free to correct me.
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