DAC Performance
Both the Mojo and HA-2SE can handle a maximum of 32 bits and support DSD files, with the Mojo having a maximum upsampling rate of 768 kHz, while the HA-2SE with a maximum of 384 kHz. Both the HA-2SE and Mojo can operate as line-out devices, allowing you to use them as standalone DACs with your higher-powered desktop headphone amplifier, speakers or stereo unit. Both require a 3.5mm to RCA cable to plug into most amplifiers. I did not run either device on a desktop rig, so I cannot comment on the sound, but having line out adds extra value to the devices, and can make them your new desktop DAC section. Since the Mojo has some of the most advanced DAC technology out there aside from the higher end Chord Mojo and Dave, and perhaps another UK-made product, the Meridian Audio Prime, it will make an excellent DAC stage in your desktop system.
NO! ONLY the HA-2SE can operate as a pure line out device. NOT the mojo. Its Misleading reviews like these that made me purchase the mojo in the first place. It cannot function as a line out DAC. Simply not possible to bypass the amplifier section. the 2 button combo for pre-amp is just a volume preset, at which it gives 2v output, nothing else. Its very misleading.
I required a Portable DAC to use with my car audio system which has its own high end amplifiers. Mojo amplification made the sound horrible. the HA-2 on the other hand has pure line out which bypasses its amplifier completely so you can just utilize that brilliant sabre chip, and it sounds amazing with external amplification.
Dont get me wrong, I love the mojo, Its brilliant with my headphones. But I love my HA-2SE more as its much more versatile, and sounds almost equally good.