Currently with my mic Interface which actually has a really decent DAC with a pretty low noise floor. That goes into an amp + headphone splitter combo, I still have enough head room to really push them but I might try to find my old O2 in the basement.

But it was pretty important to me to have something that’s easy to drive since I don’t have any amp with me when I’m somewhere else making music. Shitty laptops and analog gear with an headphone out as an afterthought are the norm. Maybe I’m getting a mini amp later on.