Oh, have you tried eq? Resolve from the (headphone show on youtube and headphones.com) eq'd them to his taste, mostly to bring down and level out the lower mids, opening up the soundstage and adding definition to the bass (he left the bass at about the same level). You might can try out his preset and fine tune to your taste.
If you do try eq, let me know how it works out for you. I'm looking at getting the zeus, and I'm wondering how well they take eq and if i will be able to bring up the sub bass to my preferences without reaching the drivers' limitations.
Just figured out how to make Equalizer APO work on Windows 11, woo. You gotta use v1.1.1 not the latest.
So, after applying Resolves EQ (and I'm not an EQ guy btw so.. grain of salt)
Bass
Loses some of warm, round tubey character, not that I've heard a tube amp mind you. The bass is cleaner and better defined, it quite obviously has a positive impact and slam now.. but.. imo, it's nothing to write home about. It sounds pretty generic and.. mmf, my Grado 325X's have a deeper, cleaner more satisfying bass response if a clean well defined bass guitars and kick drums are called for.
I threw on Korn - Ball Tongue because it's got a lot of drops that really require deep clean bass to sound good. I was very underwhelmed. Worse, the general character of the track imo is much worse. On my grado's that bass guitar is eerie AF, on Zeus.. ehhh, I know what it's trying to do and it's not doing it.
FKA Twigs - Two Weeks: This calls for clean, clear, deep bass and again, very underwhelming, with or without out this EQ imo.
Mids
Mmm... so, on FKA - Twigs this sounds too thin and tinny, the exact opposite of what I want from the Zeus.
Male vocals... so some Nick Cave - this I approve of, on this track. Flicking the EQ on and off, the EQ is clearly better, I love this track, but not without this EQ. Without EQ there's way too much bleed into the vocals, it's bloated and not enjoyable. This sounds natural and right. That said, the instruments are missing some warmth that I love from the Zeus.
Nirvana - Come As You Are (MTV Ungplugged)
This is clearly an overall improvement. The vocal tone sounds much better to me overall. Without EQ, Kurt's sweeter tones sound a little too smooth, and when he flips into some vocal distortion it's too harsh and emphasized, with EQ it sounds much more natural. Lacking a touch of body and richness again, but, it had far too much without EQ.
Treble
I'm not audiophile enough to really know what to look for here. I know the cymbals in Kittie - Mouthful Of Posion can be really, really sharp, so.. let's play that. Oof.... this is good, this is really really good. It's a little bit too warm and rich with EQ off, just slightly on the tinny side with the EQ for my taste.
Soundstage
The Zeus can definitely get congested. One track I noticed this on quite badly was Eve 6 - Rescue. The EQ does provide better instrument separation, at the cost of the vocals and some instruments sounding too thin for my taste. No changes to depth or width that I can perceive.
Overall
Anywho, I don't know "how well" they take EQ, but I don't notice anything where I feel like the EQ isn't doing what it should. Whilst it might not be quite to my taste, it doesn't feel like they're misbehaving in any way.
If you ask me what to look for on what track, happy to tell you how I perceive it.
I dialled back every change over 100hz by half and that strikes nicer toner balance overall for me listening to all these tracks. YMMV!
I pushed 40hz up another 8db gave what I consider the "right" volume for the bass guitar in Korn - Ball Tongue, but, it's still warm and rounded, lacking sufficient texture and extension. It's a lovely tonal character on a lot of tracks but so so wrong for this track. Oof, gives Kittie - Mouthful of Poison the right amount of kick drum volume but again, there's a warm smooth gooeyness that not right for this track.
EDIT: Ah! That 21hz bumped up to 6db gives the kick drum much better definition, same with the bass guitar in the Korn track. Still doesn't have enough texture or extension but... a massive improvement for the genre/tracks.
You may have inadvertently turned me into a fan of EQ haha.
Apparently this is what I like on the Zeus
EDIT2:
Okay, now the bass sounds "right" across the board to me and whilst I'd give the edge to my Grado's for extension and texture, it's satisfactory for the types of tracks where bass frequencies are a strong component of the track. Better yet, there was a tonne of tracks where I just didn't like the Zeus. EQ'd like this... I'm yet to find anything offensive or unlistenable (though the bass is leaning into gratuitous territory).
That said... some of the Zeus magic is lost and some tracks that just blew me away without EQ are just "good".
The Beatles - Sgt Pepper (album): Simply delightful without EQ, with the EQ it's... "meh".
Iron and Wine - Innocent Bones: It's not bad per se with this EQ, a little too thin and metallic sounding, without EQ, it's just scrumptious.
John Williamson - Cootmundra Wattle: Sounds warm to point of, I just don't want to listen to this without EQ, throw the EQ on and ka'blaam, delightful.
Nirvana - Come As You Are (MTV Unplugged): I wouldn't listen to this on Zeus without EQ, with EQ... all day every day.
Mudvayne - Dig: Waaay to warm without EQ, tiny, tiny bit thin somewhere in the FR, somehow that makes me want to fiddle that EQ but very, very listenable.
Kittie - Mouthful Of Posion: Without EQ, warm bloated mess. With EQ, bass is a little too gratuitous but it's got sufficient punch just lacking a touch of definition, guitars are off the charts, just missing a little a tiny bit of thickness. Vocals so, so, so good. I need to find whatever frequency is making the guitars on heavier end of this spectrum just a teeny tiny bit thinner than what I know they can be. But hot damn, the Grado's were my go to for the aggressive end of my playlist, now.. um, my warm, creamy, lush Zeus at the flick of a switch are absolute monsters. Hot damn I love this headphone.
Dunno if that helps in the slightest but, there ya go.