ZMF Headphones Atrium Closed

All this tuning potential in earcup acoustics extends to Atrium Closed's owners with new Caldera earpads the stock options. Their special fluted, tapered, horn-shaped design take on the form of acoustic amplifiers. Indeed, Atrium Closed won Part-Time Audiophile's Reviewers Choice award.

Leather or suede directly contribute to which frequencies you choose to enhance, making Atrium Closed such a pleasure because ADS makes it so versatile. Atrium grants ZMF full control over a soundscape, with internal cavity design challenging the physical limits of linear full-range reproduction in closed-backs like never before.

The latest acoustic design innovations show up audibly with Atrium Closed. That vast soundstage is granted by gradual diffusion through multi-weighted materials and zoned sonic diffusion behind and around Atrium Closed's driver.

Acoustic dampers work closely together with driver mounting position for optimal diffusion effects, allowing ZMF to introduce greater perceived soundstage width and depth. 

ADS is now complete with fluted, horn-like, Caldera pads – leather versions expressing a disposition to deep, impactful, pounding and immersive sub-bass; suede material, very reminiscent of how the Harman Curve dictates a mid-range should become emphasised. 

Indeed, this frequency manipulation of the patented Atrium Damping perfectly illustrates how far up the R&D ladder ZMF have come.

Starting with biocellulose, stiff and lightweight as a diaphragm material, this fibre also promises excellent damping. Biocellulose allows ZMF to keep the large 50mm driver under control at all times even as frequencies rise, averting any harsh intermodulation due to cone modal break-up.

The Atrium system then works hand in hand with the driver, allowing ZMF to choose how little or much back-wave damping is needed from the negative impulses of the driver, which back waves they had to keep, and which they want to get rid of, for the optimal acoustic headphone system.

An incredible amount of fine-tuning takes place selecting distances within the cup and damping material for optimal airflow, an ongoing process before ZMF deem each variant ready to release to the public.

Atrium Closed brings everything ZMF owners have loved about their existing open-backed models into an isolated model. It adds a new dimension of sound that ramps up the technicalities, spatial reproduction and low-frequency engagement, while retaining the natural biocellulose mid-range timbre that audiophiles dream of.

Also view the rest of ZMF's collection that built up to this moment here, or our other headphones here.