Mini-drop Friday 2.13

This first batch of Caldera Closed Walnut Burl LTDs will drop 1-of-1 style, allowing you to choose the burl that speaks to you! There will be a curated variety of configurations available, with specs denoted on each individual photo and listed for preview the day before the drop.  New headphones will be released periodically. Subscribe to our email list for release dates!

Each cup is full of gnarly, burly figuring and will have fills, some cups more than others; sets are priced accordingly. 

Walnut Burl

Walnut Burl brings explosive visual drama to ZMF's first proprietary closed planar magnetic headphone. These massive growth formations—nature's response to stress—create some of the most sought-after figure in the woodworking world. Each cup reveals wild swirling grain, deep mineral streaking, and countless eyes that create three-dimensional depth impossible to capture in photographs. Rich chocolate browns transition to warm amber highlights with dark mahogany accents, all shifting and dancing as light moves across the chaotic grain. This is figured wood at its absolute extreme, where every cup tells a unique story of centuries of growth under duress.  

The sonic benefits of burl walnut's dense, complex structure perfectly complement the Caldera Closed's sophisticated design. The chaotic grain orientation provides natural acoustic damping that enhances the patented Atrium Damping System's effectiveness. Combined with the patent-pending CAMS technology and three levels of damping plus electronic filter circuit, the wood's density and figure create a segmented system that filters and presents frequencies naturally. The result is the Caldera Closed's signature superior treble presentation and enhanced sub-bass performance, elevated by organic warmth and harmonic complexity that makes the planar driver's speed and resolution feel somehow more musical and alive.

Again, please note that the wild figuring and chaotic grain of Walnut Burl will result in fills, which are not flaws but part of the distinctive beauty of the wood.