Listening low levels before house is awake. Nothing is missing at 65dba except the bass impact I usually experience at normal levels (for me) of 85dba or so. This is with M5s that usually come alive with more power. My listening room is treated for higher volumes, so I’m not getting the envelope around me at low levels however. As expected.

If dbc makes more sense to you add 10 to my numbers to correlate the two weights approx.

More to follow after more listening. Need to put more time in around 85dba.

Not sure about the folks who cant hear a change when using this dac as reported in other forums. They must have had a pretty incredible one already or another bottleneck somewhere. Pretty obvious change in my setup. Maybe my old dac was was terrible (by comparison) Good thing is it verifies the M5s are at a high enough level to showcase everything upstream from them.

Old Bluetooth Dac ( I fed it with AAC from ipad via bluetooth)

https://www.stereophile.com/content/arcam-rblink-bluetooth-da-processor