ahhh.. its because there mono, outputs are in parallelabraxalito wrote: ↑Mon Dec 10, 2018 3:07 pm I can't see how having two Rs (one on each output) to GND changes anything. Though his output voltage might be measured differentially between the two, that wouldn't change the offset, which would be zero measured between the two output pins.
dddac explains here
"The current outputs from the DAC are summed up on the Mainboard. In the Mono Mode, actually the two DACs inside the chip are already operating in parallel, so the outputs can be tied up together to sum up the currents. For the passive I/V conversion, which is done by the parallel of Ra // Rb, space is offered for these two resistors. By using two resistors, you can combine to different values. With one deck, 270 Ohm per current output is the nominal load. There are two current outputs parallel, so one 133 Ohm resistor is being used. The small table at top right shows the values when more than one DAC module is being used."