ZMF Atrium

HiFi, OpenBack
ZMF Atrium — Handcrafted Sound From Oregon

Zach Mehrbach’s ZMF Headphones occupy a unique space in the headphone world — handcrafted, wooden-cupped, boutique headphones made in Portland, Oregon with the kind of artisan care that’s vanishingly rare in modern electronics. The Atrium is their flagship open-back dynamic, and it’s unlike anything else I’ve heard.

Build & Design

Stunning. There’s no other word. The Atrium’s wooden earcups are individually crafted, and each pair has a slightly different grain pattern. Mine came in stabilised Cherry, and they’re genuinely beautiful objects. The magnesium chassis, the thick leather headband, the rhodium-plated connectors — every detail communicates care and craftsmanship.

At 470g they’re not light, but the suspension headband distributes weight well and the lambskin pads are supremely comfortable. These are headphones you display on a stand when you’re not wearing them. Meze gets praised for build quality, but ZMF takes it to another level entirely.

Sound

Bass

Warm, rich, and enveloping. The Atrium’s dynamic driver produces bass that’s more about texture and body than analytical precision. Double bass has a gorgeous resonance, kick drums have satisfying weight without being aggressive. It doesn’t reach as deep or as tight as a planar like the LCD-X, but there’s an organic quality to the bass that makes acoustic and jazz recordings come alive in a way that measurements can’t capture.

Mids

This is the Atrium’s heart. The midrange is lush, full-bodied, and incredibly musical. Vocals — particularly male vocals — have a richness that’s intoxicating. There’s a warmth here that never crosses into muddiness, maintaining clarity whilst adding body. Resolve from The Headphone Show described the Atrium’s mids as “honey-textured,” and it’s an apt description. Compared to my HD600, the Atrium is warmer and more romantic, less neutral but equally engaging.

Treble

Smooth and rolled-off compared to brighter headphones. The Atrium prioritises musicality over detail retrieval in the top end. Cymbals are present but softened, air and sparkle are hinted at rather than spotlit. If you’re coming from a Beyer DT 900 or an HD800, this will feel dramatically smoother. It’s the kind of treble that invites long listening sessions without a hint of fatigue.

Soundstage & Imaging

The open-back design combined with the wooden cups creates a unique spatial presentation. The soundstage is more oval than circular — wide and tall with moderate depth. Imaging is good but not surgical — instruments are placed in a natural, organic way rather than with clinical precision. It’s the difference between listening in a concert hall and in a mixing studio.

Dynamics

Beautiful. The Atrium’s dynamic driver excels at both macro and microdynamics. The way it handles a piano’s dynamic range — from gentle arpeggios to thundering fortissimo — is deeply convincing. There’s a liveliness to transients that keeps music engaging without being aggressive.

Comparisons

Against my HD600, the Atrium is warmer, more spacious, and more luxurious in presentation. The HD600 is more neutral and arguably more “correct,” but the Atrium makes music feel better. They represent different philosophies — accuracy versus beauty — and both have their place.

Against the Meze Poet, there’s a family resemblance in the warm, musical tuning, but the Atrium has more refinement, better dynamics, and considerably better build quality. The Poet is the more approachable (and affordable) option; the Atrium is the destination.

DMS has spoken extensively about ZMF’s house sound as “audio comfort food,” and the Atrium is the finest dish on that menu. Through my Sparkos Gemini, the tube warmth complements the Atrium’s character beautifully — it’s like wrapping an already warm blanket in another warm blanket, in the best possible way.

Verdict

Pros

  • Extraordinary craftsmanship and build quality
  • Lush, warm, musical midrange
  • Fatigue-free treble for endless listening
  • Dynamics are engaging and lifelike
  • Beautiful to look at and display

Cons

  • Warm tuning isn’t for analytical listeners
  • Treble detail and air trail brighter designs
  • Price is steep for a dynamic driver
  • Bass extension trails planars

Ratings:

  • Build & Design: 10 / 10
  • Sound: 8.5 / 10
  • Comfort: 8.5 / 10
  • Value: 7 / 10

The ZMF Atrium is the headphone equivalent of a hand-built guitar — imperfect by specification, perfect by feel.