Let me preempt your loaded questions by saying that, yes, it's true that I didn't do everything with a ****load of meters and it was all by ear.
At this point I'm just annoyed. You aren't actually asking. What you're doing is coming with a conclusion that you believe is true and hunting down ways to try and feel satisfied that I did things incorrectly. They don't sound the same. I'm sorry if this hurts your feelings.
You know, it's funny watching this pan out. By your posts, all amps and DACs are the same. Nothing is different. A dragonfly is the same as a Chord DAVE. As long as it's the same volume, an iPhone dongle sounds the same as a Questyle gold stack. ****, why are we spending money on these things? Just get the dirt cheapest amps on Amazon we can find as long as they have enough current, right? Hell, why are we buying amps at all? You can get an Audeze to listenable volumes through a laptop, so what's all the fuss about??
The Mojo does not sound as good. It's a mobile dac/amp. If I need to guide you through how it's possible for friggin' amplifiers to sound differently, then I think you might want to stop spending money until you actually read how any of this hardware works.