Orion 8 goes extremely well with....tada...Senheiser Momentum 2 headphone, one of the warmest headphone I have in my stable, extremely colored, extremely warm, veiled, with overwhelming and messy bass.
Don't laugh, I'm very smitten with Momentum. With Orion 8 it becomes very lively, well disciplined, extremely well separation and clarity, open soundstage is the word. Slight warmth, crystal clear, good vocals, you can feel the emotions in the vocals, in the notes, extremely well controlled bass, very very good subbass, extended treble and bass, you can pretty much hear everything that's in the recording if its there, or at least 99% ( well, I'm using modded 1Z, but still). Just Wow, doesn't lose to EE Phantom at all. Using 4.4 mm balanced using generic 4.4 mm cables from Amazon. Just Wow!
I think I will be happy with Momentum if its the only headphone/ iem I have in my stable. Not saying Momentum is a very good headphone, its not, it has its limits. But the basic building block is already there, Orion 8 shaped everything else, put them the right order and speed, and voila, ear orgasm! My God, male vocals its so mesmerizing, they caress my soul; females vocals are so lively. I can listen for hours and hours, its very easy to get lost since they sounds so soothing and good.
Just want to add, majority of my songs are MP3 320 mbps format, some are FLAC and DSD, but they perform extremely well with Orion 8. I don't notice a lot of difference between different formats as longs as the master recording is good. Maybe the headphone/iems are forgiving, maybe the new FW help them perform to their max potentials, not sure, but I'm sure am enjoying them.