OLLO’s X2 Makes Its Calibration Data Yours to Keep
A headphone’s correction data can be almost as useful as its driver, provided the owner can actually use it. OLLO Audio’s new X2 takes an unusually direct approach: each unit comes with human-readable calibration values, with a printed copy included in the package.
Listen to this article
Narrated using Mark Henninger’s authorized AI voice clone.
OLLO says the unit-specific calibration file is unencrypted and can be used with compatible EQ software or DSP hardware. Its included USC plugin provides one route, but the data is not confined to that plugin. Moving the correction to another system can require manual setup; openness is not the same thing as automatic integration.
The X2 itself is an open-back design with a 50 mm dynamic driver using a beryllium-coated PET membrane and polyurethane. The published impedance is approximately 32 ohms, and the weight without the cable is 383 grams. OLLO lists preorders with shipping beginning December 7.
Serviceability is another part of the proposition. The company says its replaceable parts are available separately and can be changed using home tools. Direct purchases carry a 90-day trial, while the headphones have a five-year limited warranty subject to the manufacturer’s terms.
There is no need to turn the calibration story into a claim of perfect raw response. OLLO’s published response figures include specific measurement conditions and tolerances that should not be compressed into an unqualified claim that the uncorrected headphone stays within one decibel of a flat line.
The practical appeal is ownership that extends beyond the ear cups: access to the correction values and a route to replacing worn parts. How the X2 sounds and translates a mix still deserves a separate assessment.
