The problem with Stax is they really need a third party amp to drive them properly or they can sound bass light or too sharp hf. It’s a real rabbit hole so I’d stick with Sennheiser where you can have an amp of your choosing
I have Stax 009s via a GG amp and also Focal Stellias balanced from a Manley Absolute. I’m looking for some open backed cans to take advantage of the single ended option on the Manley so I can switch between them as I choose. What would give me a different flavour to the others? I do like a wide...