I've heard of it too but I haven't experienced one. The thing with the 105 is its Saber 9018 processing chip sounds so extended with so much resolution the midrange and bass sounds thin. The 103 is similar but uses the Cirris logic chip. I just use it for HDMI to big screen.
My thoughts are if room is setup well, first reflection points are set, speakers are setup correctly from each wall. Speakers are truly phase coherent - You shouldn't need room calibration at all. Just takes time to align everything. Processing in a separate dac will always be better quality hands down. And a separate power supply takes things to a greater level.
My thoughts are if room is setup well, first reflection points are set, speakers are setup correctly from each wall. Speakers are truly phase coherent - You shouldn't need room calibration at all. Just takes time to align everything. Processing in a separate dac will always be better quality hands down. And a separate power supply takes things to a greater level.