RX/TX so you can run it in your back pocket and have your phone go to amp, then amp to headphones. Be aware you aren't using the DAC in this case at all, Just boosting the volume.
Is this better than the award winning Chord Mojo? I do acknowledge the Chord does not have Bluetooth and this does, but for wired listening and using the DAC, is this a better option?
Chord products are niche expensive products, they are great and very hard to beat sound wise but they often lack some of the more popular current features like Bluetooth or balanced on some products
No, the Mojo kicks the crap out of it and wired is alwasy better than wireless which is better than bluetooth. The best DAC/AMP in this price range is the ifi hip dac.
frontsidebusSubjective, but I have all three and would concur with that assertive statement. I do find I go for the XDUOO because of convenience with BT. If I’m at home I have a different setup, but for on the go or coffee shops, or being on the shitter it’s a major go.
Such cables do exist - they are available from Apple, Amazon, Monoprice, etc. I can't think of any reason they wouldn't work in your situation, although it might be hard to find a really short one for portable use.