Headphone calibration
A measurement of how your headphones or room alter the sound — the starting point for correction.
See licenseMEAS
Hear what's really there.
MEAS calibrates your Mac's sound — measure your room or pick your headphones, choose a target, and hear it corrected in real time.
Every output,one reference.
Room measurement wizard
A guided sweep you play through your speakers while a microphone listens — several positions get averaged into one reliable measurement.
See licenseTarget curve editor
The response you want after correction: ruler-flat, gently tilted, or a custom curve you draw.
See licenseSystem-wide correction
Real-time filtering inserted into your Mac's audio output, with A/B compare and a dry/wet blend.
See licenseQuadra Guard
Sign in with your Quadra ID, try free for 14 days, then activate this Mac. Work offline after that.
Manage accountLicense
Buy once.Keep it.
Perpetual license · 14-day full trial · 2 Mac seats
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How to get MEAS
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Questions? We have answers.
Choose Buy MEAS, sign in with Google (your Quadra ID), accept the terms, and complete payment on Stripe. Then open the MEAS Mac app and Activate.
MEAS