I “only” have 4 ZMFs (Aeolus, Verite Open, Atrium Closed, Caldera Open) and @Lothar_Wolf’s posts have me itching to expand my collection.
I was just at Axpona last week. It’s mostly a 2-channel show, but they have a huge room for headphones too, dominated by the hometown presence of ZMF. As an aside, it would be great to see headphones.com have a table there too at future Axponas (hint hint Taron & Andrew).
Like Can Jam, the headphone room gets a bit noisy, but Sundays are pretty quiet, and perfect for both chatting to vendors and listening to music. I spent my Sunday afternoon at the ZMF booth, chatting with Zach, Bevin, Kevin and the rest of the ZMF family and then realized that the show was closing in an hour and I should probably try some headphones. In my limited time, I tried the Bokeh Open & Closed and the Caldera Closed, using the ZMF Aegis amp.
Comparing the 2 Bokeh models was really interesting because to me at least, they sound so different from each other. As @robson said, the Bokeh Open has always sounded like a cross between a ZMF and a Focal to me (and as a fan of both brands, that’s a compliment!) but the Closed had less of that Focal sound, and I preferred it. Neither is better or worse, it’s just that the BC had more of the sound I was looking for.
And then I tried the Caldera Closed. The Caldera Open is my favorite headphone that I own (along with the Focal Utopia 2022), and I didn’t have the time to compare the 2 Caldera models, but I have to say the Closed was exceptional. Working off memory, I’d guess the CO is a little more neutral and the CC is slightly warmer, but they are both detailed and have a thunderous bass. If I see a limited edition that grabs me, I wouldn’t be surprised if I persuade myself that the Caldera Open and Closed are different enough that I could own both.
On the other hand, I could also see myself buying a Bokeh Closed. One of my favorite headphone experiences at Axpona was listening to the BC on the new ifi Valkyrie. Combined with ZMF’s new clamshell case, which was designed to slip into a backpack, that would make one hell of a travel setup. I tried to buy one of the clamshell cases, but unfortunately, they didn’t have any for sale at Axpona (or perhaps they’d sold out by closing time on Sunday). I really recommend it to anyone who’s struggled to carry their ZMFs around.