TC Electronic UpCon - Manual (Page 27)

Setting up audio
English Manual 23
Dither out parameters
Use the four Dither out parameters (1/2, 3/4, 5/6,
and 7/8) to configure dithering for each pair of
audio signals. Available settings are “Off” (no
dithering applied), 24 bit, 20 bit, 18 bit and 16 bit.
! If you are handling data-reduced formats, be
sure to set these parameters to “Off”.