Yes, it's a strong case for using a DAP IMO, but even a DAP using optical or coaxial or OTG USB may stress their inputs if not used carefully in a pocket. Like all devices, any stress on the input jacks should be avoided IMO. Personally, I feel Chord should release their add on kit that will help relieve the CCK stress on the Mojo's USB input. I'll admit, it's seems a long time coming. I do find the short supplied USB cable is just a hair too short and doesn't help the situation much. In the end an all in one CCK aftermarket cable will help, for sure, but it can still stress the input depending on how the stack is taken care of. I guess what I'm saying is that whether using the Mojo or any other device stacked with a DAP, care should be taken with regard to stress on the inputs.