One and for all: the line-out on Fuze is a true line-out
The line-out signal is directly from the SoC, which has a dedicated line-out signal path - if you don't believe me, you can download and read the datasheet
Previous argument that 'conclude' Fuze's line-out isn't a real line-out based on the fact that older firmware allows volume adjustment on line-out signal*
, but they forgot (or more precisely, 'don't know') that the volume control mechanism is built into (integrated on) the SoC line-out section on chip, as well as the SoC headphone-out and (hidden) speaker-out. It doesn't means it is not a line-out, it merely means the line-out can be adjustable by the choice of the manufacturer via firmware. By disabling the volume control function (in the latest firmware), the SoC is essentially outputting specified line level signal to the dock by a dedicated line-out signal path after the DAC to the dock connection, thus it is a real line-out
BTW, all of these info^ have been confirmed by Sansafix (Sandisk tech support on Sandisk forum) during my discussion with him. Hopefully this clear things up a bit.*
which leads critic to believe it is covered up max out headphone-out.