EQ’ing that bass in is effortless. Got a 4.4mm cable for them with a nice braid.
I do gaming with them and it just feels so freaking wide.
I’m a percussion guy. Drums and intricate percussive ellements, in music, sound blissful.
Try listening to Dinossaur - OTR Remix, close your eyes and have fun.
Regarding your Zen DAC, I have the same experience with my Hip Dac 2.
The 3.5 output drives them nicely already.