I love my Series 3 IEMs. They sound great with anything I use them with.
The one caveat with these (at least for me) is that they can be really loud if you aren't careful.
When I use them with my MacBook Pro, I have to adjust the volume on partial steps (option + shift+ volume+/-) between 1 and 3. Otherwise it is too loud.
With my Shanling M1, I have to set it to low-gain mode with volumes no higher than 50 or I'll blow my ears out.
The weird thing is that they work really well with my iPhone across all volume levels.