16-Apr-2019, 21:09
I can confirm that with Firmware 13.1.3 and DOS 2.2.4 if I set bass to +18.0 and SAM ON I get a lot of distortion. It is OK with SAM off or with Bass at normal levels. It is not a setting I normally use so I do not know how it would have sounded on the previous firmware.
Roon -> AIR -> Ethernet -> D220-> KEF Reference 3