As a cable is always connected between the DAP and the IEM, I believe it is proper to discuss the synergy of the cable for the DAP/IEM being used, so either thread is a proper place to discuss the components that make up the system (DAP, cable, IEM). After all, you can't get music if any of the parts are missing.
However, I am sure there are also threads that are focused on cable materials, braiding, insulation, insulation, shielding, connectors, etc, as a subject in it's own entirety, and less on the DAP/IEM, so if that is the discussion desired, then yes, those specialized threads would be better for that type of discussion.
Regarding cables, the best way is at a store where you can try them. And some advice is:
- don't jump too quickly. Try a first impression, and a 2nd, and a 3rd. Don't jump into the deep end right away. Ease into it to learn what is available, and what you like. And what is affordable.
- read reviews, but be aware that different equipment and synergy, or just the wrong fitting earbuds, will five entirely different results from what an experienced reviewer experiences. But reviews are necessary to get a beginning idea.
https://headphone.guru/the-aftermarket-iem-cable-shootout-part-1/
https://theheadphonelist.com/category/reviews/cable-reviews/
- watch your budget. It is too easy to overspend, and unfortunately, everybody does exactly that. Keep a balance. Or at least try to.
- try cheaper, lesser-name cables first. If limited budget, this is the way to go.
- the cable should also be easy to use/pack up. One with bad egonomics will get used less often.
- be clear on what you are looking for in the music first. i.e. I look for more micro detail/stage, for vocals, and jazz/classical. And Pop/Rock. Transparent, not harsh. Copper did not give what I wanted. Gravitated towards silver. (pure, not plated). Currently finding that hybrid combinations have some sort of magic to them. Take a look at Hansound Aegis and Kimera for a hybrid. Agni for a silver cable. I happen to like Hansound, but they are not that widespread. Take a look in the stores, or web sites, for others. Effect Audio, Plussound, PW Audio, Brise, ALO, etc.
- Be aware that first impressions can be misleading. Like going to Future Shop and hearing a speaker that is artificially boosted to impress. But when you take it home, you find you cannot live with it.
And it all takes time, and learning, and mistakes. Many mistakes. All part of paying the dues.
Oh, was your question whether you should try 4.4 balanced? I would say definitely.