STONE - A Thank You from Acustica Audio!

As part of our Holiday tradition, every year we love to surprise our community with a special gift as a thank-you for your loyalty and continued support.
This year, we’re pleased to share something special with you.

Please welcome STONE, our FREE Acqua plugin, permanently available at no cost, inspired by rare British audio modules originally designed for broadcast and studio use between the 1960s and 1970s, available in VST3, AAX, and AU formats for all major DAWs on macOS and Windows

Key Features

• Permanently free Acqua plugin
• Custom modular signal path inspired by rare British audio designs
• Magic Morph control for blending drive, movement, and space
• Rare, musical 3-band stereo EQ inspired by classic hardware design.
• Smooth, vintage-style top cut and bass cut filters for natural tonal balance
• Switchable 3-D and flat 2-D interface
• Responsive, professional metering

A Different Kind of “Vintage” Tool

STONE is not your typical vintage channel strip.
The concept behind this plugin is to create a custom modular signal system, designed as a coherent signal path where tone, balance, and character come together naturally.

The 'Magic Morph'

At the heart of STONE is an original creative control: the 'Magic Morph'.
This intuitive control allows you to blend smoothly between different sonic behaviors, introducing drive, stereo movement, and spatial depth in real time.
It’s a hands-on way to explore tone and space, designed to feel musical and inspiring.

Tone, Character, and Space

STONE combines input character, harmonic drive, tonal shaping, and filtering into a single, unified experience. musical, wide-curve equalization with a distinctive sonic personality.
The result is a sound that adds weight, depth, and personality while remaining smooth and musical.
Each stage interacts organically with the others, encouraging both subtle refinement and expressive shaping. Future developments may introduce additional modules and extended functionality, allowing the system to evolve while preserving its original identity.

Two Views, One Experience

TONE lets you switch instantly between two interface modes without affecting the sound.

• 3-D View – A hardware-inspired interface with depth and realism for an immersive studio feel.
• Flat 2-D View – A clean, minimal layout optimized for speed and clarity on modern setups.

STONE 3D 3-D View

STONE 3D 2-D View

Technical information:

• Supported formats: VST3, AAX, and AU.
• Available sample rates: 44.1, 48, 88.2, and 96 kHz.
• Compatible with Windows 10 and 11.
• Compatible with macOS 10.15 (Catalina) to macOS Sonoma (version 14.x).
• Intel, AMD, and ARM compatible.
• Native Apple Silicon support (Rosetta not supported).

Acustica 2026 Calendar + Stone manual

Enjoy STONE

STONE is ideal as a creative tone shaper on individual tracks—vocals, synths, guitars—where subtle EQ curves, filters, and the Magic Morph can introduce movement, width, and a sense of dimension that feels organic rather than processed.

Use it also on buses and submixes (drums, keys, backing vocals) to gently glue elements together while adding weight and musical presence.
Think of it as a finishing layer: use STONE when the sound is already right, but you want it to feel alive, deeper, and more expressive.

Just log in to Aquarius, download STONE in your preferred format, authorize it, and start using it right away.
No limitations. No demo mode.

We hope STONE becomes a new source of inspiration in your creative process.

Acustica Audio Holiday Sale!

From December 22, 2025, through January 11, 2026 Acustica Audio brings amazing discounts up to 80% on over 50 plugins! Welcome to Acustica Audio Holiday Sale

More info here: https://www.acustica-audio.com/pages/acustica-holiday-sale

From all of us at Acustica Audio, happy Holidays and enjoy STONE!