Every product ships with its own measured frequency response - no marketing curves
80mm planar magnetic, open back
An open-back planar magnetic headphone built around an 80mm diaphragm just 1.8 microns thick, suspended in a symmetric neodymium array that keeps distortion below 0.15% THD at 94dB SPL across the midrange. The result is a response that holds ±3dB from 20Hz to 20kHz without a single corrective filter in the signal path.
Every pair is measured on a GRAS 45CA head-and-torso simulator before it ships, and the plot goes in the box with your serial number on it. Channel matching is held to ±0.5dB, the machined aluminium yokes adjust in 2mm detents, and the lambskin pads are a four-second swap when they eventually compress.
Free two-day shipping within the US on orders over $99, dispatched from Portland the same business day if ordered before 2pm PT. 45-day returns, five-year warranty, and spare parts published for every product we have ever shipped.
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I mixed on a matched pair for eight months and checked the results against a mastering room I trust. The low end translated within a decibel. The DSP correction sweep took four minutes and fixed a 6dB null at 120Hz I had been compensating for by ear for two years.
I flagged a 0.4dB channel mismatch on my REF-1s - within spec, but it bothered me. The acoustics lead replied with the driver serial history attached and shipped a tighter-matched pair the next day. I have never had a support exchange like it.
Verified against my own i1Display Pro and the factory report held up across the full P3 sweep. My only complaint is that the local dimming blooms slightly on white text over black at 1,600 nits - switch the HDR profile to 600-nit reference and it disappears.
Three years on my Slate the battery was down to 79% health. Ordered the cell from Axiom at $48, downloaded the service manual, eleven screws and one connector. Back to full runtime for the price of a dinner. No other laptop I own would have let me do that.
NewAX-WIREAR-02
AX-STUMON-03
AX-MECKEY-04
AX-SMAWAT-05