Interesting learning from setting up the DAC8 DSP with LXmini+2: have to pay attention to the extremes. I'd copied over the settings from the miniDSP 4x10HD to the nanoSHARC. Everything seemed fine except for bass heavy tracks where I had massive distortion. I noticed the sub channels were outputting over 0dBFS which was the cause. As the nanoSHARC has no volume control everything is running full-bore, while the volume control for the 4x10 is done in the DSP.
Previously I'd thought the subs were reaching their max and distorting at higher levels, but it turned out I could get far more SPL out of them cleanly with the nanoSHARC setup. With my amps the 4x10 was exceeding 0dBFS with certain tracks when the volume was higher than ~-15dB. Makes me wonder how many other people are bumped in to that implementation issue and don't know it.
I'am using a miniSHARC (at full volume) with the DAC8 and a pair of LXmini+, not LXmini+2. I don't think I have this problem. But maybe I don't listen to bass heavy tracks or the +2 Subs are boosted more than the + subs. But I have to check it these days.