Everything you need to write about Mastering Suite

Product

StudioZIO Mastering Suite

Version

2.1.1, released 7 September 2026

Price

Free. No account, no licence key, no iLok, no email registration.

Platform

macOS 11 or newer

Architecture

Universal — Apple Silicon and Intel

Formats

AUv2, VST3, AAX, Standalone

Windows / Linux

No build

Installer

Apple signed and notarized .pkg, 20.7 MB

SHA-256

b054098c4f6565e5e469efd41554425d468830a001c9d4c531e72ab8c50f4cf1

Parameters

42 automatable, organized into 9 automation groups

Developer

StudioZIO — Mert Erkan, Istanbul

Press contact

www.studiozio.tech/contact/

Full parameter reference, with every automatable parameter's type, range and default, is on the parameters page. Installation and troubleshooting are on the install page.

M/S engine

Body, Clarity and Focus processing.

Saturation

4x oversampled with antiderivative anti-aliasing (ADAA); "Warm Energy" and gradual-onset "Hot Tape" characters.

Pink Match

Spectral matching with a 20-second learn pass and adjustable target strength.

Glue

VCA compressor with a sidechain high-pass filter.

Maximizer

Density processing controlled by the Inflator amount.

Tone EQ

Three-band tone EQ.

Clipper

Soft or hard clipping ahead of the limiter.

Limiter

Lookahead true-peak limiter: release modes, upward compression, transient emphasis, stereo unlink, Delta audition, ceiling protection.

Output

Delivery word length, dither and output quality views.

Listed in the interface’s signal-path order. Persistent loudness, true-peak and stereo meters report the chain; they are not an additional processing stage.

Metering

FFT spectrum, vectorscope, LUFS, sample peak and true peak remain available while working with the chain.

Gain Match

Level-matched A/B from the header, so the louder version does not win by being louder.

Delta audition

The limiter's DELTA switch plays only what is being removed.

Pink Match

Ten spectral bands, a 20-second learn pass, genre targets and an adjustable pink slope. It is visual and it happens fast, which makes it the easiest part to film.

EXPECTED TP

A ceiling-derived estimate: the requested ceiling minus the limiter’s fixed 0.01 dB detector reserve. A −1.00 dBTP ceiling reads ≈ −1.01 dBTP. This read-only estimate does not measure the audio or guarantee the delivered peak. It appears when the limiter and True Peak are enabled; use the output meters to read the signal.

Quality Check System

The QUALITY button scores what is actually coming out: an overall mark out of 100 with its own confidence figure, six weighted families, and every metric expanding to its value, why it matters and what to do. Estimates are labelled as estimates and genre-dependent figures are left unscored on purpose. EXPORT REPORT writes it out as text.

Here is the first one already filmed. Pink Match takes its twenty-second learn pass against a Hip-Hop target, then the amount is adjusted while the passage keeps playing. The file below is cleared for use in your piece, whole or in part.

The take keeps audio playing while Pink Match learns and its amount is adjusted. Live loudness, true-peak, gain-reduction and stereo meters stay visible throughout.

The limiter’s true-peak detector uses 16x reconstruction with 512 taps per phase. The separate true-peak meters use 4x reconstruction with 16 taps per phase. Output delivery metering reports the signal after dither. Soft clip runs on a fixed 16x path with a smooth knee; hard clip is exact-threshold with polyBLAMP transition correction on a fixed 8x path. Oversampling is qualified per stage rather than chosen as one global factor.

All four may be reproduced, cropped, resized, cut and re-encoded for coverage of this plug-in, with no need to ask first. If you need a shot of a specific module, a different size, a longer take or a quote for your piece, write to StudioZIO and it will come back the same day.

StudioZIO Mastering Suite 2.1.1 is available in AU, VST3 and AAX plug-in formats plus a Standalone application. The release is a Universal macOS build for Apple Silicon and Intel, with AAX validated in Pro Tools. Nine stages share one gain structure: M/S engine, Saturation, Pink Match, Glue, Maximizer, Tone EQ, Clipper, Limiter and Output. Persistent metering includes FFT spectrum, vectorscope and LUFS/dBTP readouts. Pink Match matches material to a ten-band target over a 20-second learn pass. With the limiter and True Peak enabled, EXPECTED TP displays the requested ceiling minus a fixed detector reserve, an estimate rather than a measured output level. The limiter’s true-peak detector uses 16x reconstruction; the separate true-peak meters use 4x. A Quality Check System scores the output against standards-referenced metrics, reporting its own confidence and leaving genre-dependent figures unscored. It requires macOS 11 or newer, and installs from an Apple signed and notarized package with no account or registration. There is no Windows or Linux build.

No embargo, no approval over your edit, and no obligation to be positive. If it is not good enough, saying so is useful too.