Open backed headphones to IEM At home I have Beyerdynamics T1 and Topping DX7 Pro, but I’m considering some IEMs for my commute, both on a train/tube and walking in a city. I have an iPhone14, but I also have an ifi xDSD portable DAC I’m fine with refurbs, but a bit concerned about used...

I have had the DX7 Pro and the HD660S for only 6 months or so, but I'm looking for options to expand my setup and am interested in what to add first. The HD660s are great, I like the sound, though they have not completely blown me away. I would like something more detailed, and possibly with a...