xeizo
500+ Head-Fier
May I ask why you sold the small BT receivers, and how happy you are with the Q5S relative to them? If this is too off-topic let's use the 1AM2 as the headphones for comparison
I have an ES100 that I find way inferior to my LG V30, and consider going the DAP route when I change phone but I am also looking hard at the Q5S or the iFi equivalents (xCan, xDSD).
Look at audiosciencereview:s test of the LG G7, it beats even high end desktop dacs in pure dac performance. In worst case it needs a amp, I use the Topping NX1 for difficult cans.
Most if not all DAP:s are a side/downgrade from any of LG:s phones with a ESS dac.