I’ve done some comparisons between the Empyrean II and a few of my headphones and here are the results
Empyrean II vs Diana v2 (with ported pads)
Overall these are close but I prefer the Diana v2. Setup is Meitner Ma3, Serene KTE, Tyrs. Comfort is similar but the empyrean wins there since it feels a bit more normal on my head and doesn’t have the weird pad shape of the Diana’s. They are both lightweight so I don’t get any hotspots with listening.
The issues I have with the Empyrean is that the treble sounds forced and a little bit artificial at times. It’s just very present and has a thinness to it that doesn’t sit right with me. It’s spicy I guess and lacks the smoothness that I get with the Diana. I also find the bass on the Empyrean to be a tad muddy at times. The bass quantity on both headphones is similar but the control, speed, and texture in the low end is slightly better on the Diana. The vocals sound a bit more natural on the Diana. On the Empyrean there is a grain / haze to them and the lip / breath noises and “sss” sounds are more emphasized then I’d like. The vocals on Diana are smoother and you loose some of those breath and sss sounds but I find that presentation more pleasing overall.
So basically they are close but I enjoy the slightly smoother presentation of the Diana especially with cymbals, guitar strums, and vocals. The Diana also sounds a little bit more controlled and balanced in the low end. The Empyrean is more comfortable and similar in sound quality. Perhaps on a warmer amp then the Tyrs the Empyrean would compare more favorably to the Diana. Detail seems more present on the Empyrean but I think it’s just a bit forced sort of like a 1266 presentation. Imaging is comparable on both but I think the layering is better on Diana. Sound stage size is also about the same.
Empyrean II vs Atrium (with auteur perf lambskin pads)
Between the Empyrean II and the Atrium, the main difference I’m hearing is that the Atrium has much more tonal density, it also has more bass weight and slightly more intimate vocals. On both, for my preferences, the vocals are too distant but I do prefer the presentation of the Atriums more. The Empyrean sounds brighter, a bit more sibilant / sharp while the Atrium is smoother overall. Imaging and stage size is comparable and both have some issues with the bass being a bit muddy and overlapping the mids. Atrium is just more fun overall although not quite as comfortable.
I did this comparison on the DNA Stratus and thought this amp made the Empyrean II sound less weird but the output impedance of the amp is 8 ohms and the Empyrean II is 32 ohm so I’m sure there’s a weird interaction going on there.
Empyrean II vs Tungsten single sided
I didn’t spend much time with this comparison as it was clear that the Tungsten was pretty far ahead and just sounded more natural. The vocals on the Tungsten are more full and forward while they sound distant and a bit sharp / sibilant on the Empyrean. Bass might be more on the Empyrean but there’s some mud and bloat to it whereas the Tungsten is fast and textured while not bleeding into the rest of the mix. The soundstage is a bit larger on the Tungsten and imaging is much better. Apart from the comfort I can’t find a part of the sound that I prefer on the Empyrean to the Tungsten.
TLDR is they’re comfy but I don’t care for the sound. The bass is muddy, mids are recessed, vocals can be sibilant, and the treble is overemphasized and distracting. I think they pair better with a warmer chain but even off of the Firstwatt SIT-3 they sounded off. I think the best pairing might have been the DNA Stratus despite the high output impedance because they weren’t as glaringly weird sounding on that amp. I haven’t spent much time with any of the other Meze headphones and I’ve never heard the elites but I’d like to try some of them in the future just to see if the weird presentation I hear with the Empyrean II carries across to their other headphones or not.