I have a DAC that has XLR outputs, but my amp only has RCA inputs.
Aside from no additional benefits of using XLR > RCA, will it damage the equipment if the incorrect cables are used? Like these: https://www.amazon.ca/gp/product/B0956JXSSZ/ref=ox_sc_saved_title_2?smid=AGUI0L2IM8WT3&psc=1
Depends on the output circuit of the DAC... The (my) default answer is to leave the unused transmitter (driving) side floating, or better yet terminated by a resistor equal to the load (receiver) input, when going from XLR to RCA. Those cables short one side of the output to ground so could damage the DAC's output (discussed in previous posts). That is usually OK on the receiving side, when the unused input is shorted to ground, but may cause problems on the transmitting side. It may work, but I'd get a proper cable.