Hires doesn't appear to work on either the R6 Pro or the R6, it says it does, but the output stays at 44.1khz. Also not sure how Poweramp handles DSD output if it's converting it to PCM or what, but it's not delivering raw DSD to the amp on the R6 as the LED color stays blue (for 44.1 PCM) when it should turn white for DSD or green for high res PCM.