ZMF Caldera Open Headphone
The Art of planar listening
The Caldera is ZMF’s first planar magnetic headphone—a landmark achievement that blends cutting-edge acoustic design with the handcrafted quality audiophiles expect from ZMF. Developed from founder Zach Mehrbach’s deep expertise in modding planar headphones, the Caldera is built to deliver an exceptional open-back listening experience. Whether you’re an analytical listener or a music lover looking to unwind, the Caldera elevates every session.
Crafted to impress
From the stunning solid wood ear cups to the intricately machined metal grille, the Caldera showcases ZMF’s signature design ethos. The structural headband combines robust metal rods with a soft, supportive leather strap, ensuring long-lasting durability and all-day comfort.
Its modular construction allows for easy maintenance and upgrades, adding long-term value to your investment. Like every ZMF headphone, each Caldera is hand-built in the USA with attention to craftsmanship and detail.
Comfort that lasts
Despite its approximate weight of 500g (with pads), the Caldera remains remarkably comfortable. The padded headband distributes weight evenly across the head, while the moderate clamping force adapts well to different users. Whether you’re listening for 30 minutes or 3 hours, fatigue is rarely an issue.
Performance and sound
The Caldera’s planar magnetic drivers deliver a fast, detailed, and immersive sound signature. Transients are sharp yet natural, and the overall tonal balance is smooth, with just enough warmth to create musical intimacy. ZMF’s tuning prioritizes realism and emotional engagement, making this headphone a joy across genres—from classical and jazz to rock and ambient.
Key highlights
- ZMF’s first open-back planar magnetic headphone
- Handcrafted wooden cups with precision-machined metal grille
- Modular, repairable design featuring mini-XLR connectors
- Leather-padded headband for superior comfort and fit
- Balanced tuning with fast planar dynamics and signature ZMF warmth
- Expertly hand-built in the USA
Conclusion
The ZMF Caldera Open is more than just a headphone—it’s a statement piece for serious listeners. By combining planar magnetic performance with artisanal craftsmanship, ZMF delivers a product that sounds as stunning as it looks. If you value nuance, character, and build quality, the Caldera belongs in your collection.





