Mix Check Studio, from the AI audio company RoEx, is a free online tool that checks a music mix or master. A producer uploads a WAV, FLAC or MP3 file, up to 173 MB, and the AI analyses EQ balance across frequency bands, dynamic range and compression, integrated loudness against streaming targets, stereo width and imaging, and overall tonal profile, adapting its read to the genre selected, from electronic and hip-hop to rock, jazz and orchestral. The report explains what to fix before release rather than after. A Mastering+ option applies AI processing to lift clarity, loudness and stereo image automatically, and the site says over 1.1 million tracks have been analysed by producers, mixing engineers and labels.
The free Check feature gives the full analysis report to anyone, and Mastering+ can be bought per download or unlocked without limit through Studio Pro. Automated mastering suits a demo or a release on a limited budget, but a mix with real problems, such as clipping, phase issues or a poor recording, benefits more from a human engineer than from automated processing alone, so treat the report as a second opinion rather than a substitute for critical listening. The company behind it, RoEx, is an established AI audio-mastering business, which is a stronger footing than a single-page tool with no history.
Checking a mix is free with no account. Studio Pro is billed monthly for unlimited Mastering+ downloads with no long-term commitment, and can be cancelled at any time. The page advertises the plan from about £9.99 a month, while the checkout itself showed ₹399.00 a month when read here, a difference that looks like a locale-based price shown to the browser rather than a fixed global rate, so confirm the exact price for your region before subscribing. Pay-per-download Mastering+ is also available without a subscription.
