337alant
Negatively Biased
Thanks Si, have to get mine up and runningAlan, the guts of it are the fifopi board. Ess Dacs usually run a 100kHz clock and resync everything internally. With the dual clocks on the fifopi you can run in true sync mode using a local master clock to provide the timing. The idea is that it lets you run a crappy source like the rpi without issue, that side of things certainly seems to work. The Iv stage does seem to suffer a bit with hf noise from the dac board which was coupling into the opamps, the extra filtering and different opamps have really cleaned that up.
There's still some way to go, supercaps on the rails on the dac board and possibly adding a reg on the avec as well as the better clocks.
Alan