Awesome! How does volume control work to keep the subs (analog) and the mains (SPDIF) at the same level? Do you just fix the volume on your 5200s? Is that a setting I haven't seen?

Main System: MiniDSP SHD (Roon, Dirac, Volume) > G61R > DSP5200 Speakerlink L/R, 2x SVS SB3000 Subwoofers
Office1 System: Genelec 8030c L/R, Genelec 7060B Subwoofer
Bedroom System: DIY Sure 2x100w Class D Amp, ELAC DBR62 L/R