Yes, I swapped cables a few days ago and ran some of my Sooloos albums through the 6000s and difference vs. the MC600 was immediately obvious. Looking forward to trying MQA through the 6000s as well.

Question: I am noticing that the 818 sometimes shows MQA or MQA. with the dot- what does the dot denote in the display?

Theater: 861v4_LPS, 818v3, HD621, Oppo 203, Lumagen Pro, DSP8000SE, DSP5500C, SW1600x2, DSP5500, Epson 6040UB, PS4
Living room: 861v4_LPS, HD621, DSP8000SE, DSP5200C, Oppo 203, Lumagen 2143, 818v3, Sooloos/MC600 Bluesound Node
Bedroom: M80
office: G68D, DSP6000
Garage: DSP5000
Storage: M33s, DSP33s, DSP5k, 501, 518, M1500, G98DH, SW1600