Stone

Stone is an Acqua plugin inspired by classic British audio design, delivering rich tone, musical character, and creative control - and best of all, it's permanently free, available in VST3, AAX, and AU formats for all major DAWs on macOS and Windows.

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.

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.

Key Features

• Integrated Architecture: Custom modular signal path inspired by rare British audio designs.
• Magic Morph: A magic control for blending drive, movement, and space.
• Program Equalization: Rare, musical 3-band stereo EQ inspired by classic hardware design.
• Spectral Trimming: Smooth, vintage-style top cut and bass cut filters for natural tonal balance.
• Level Monitoring: Responsive, professional metering.
• Dual Rendering: Switchable 3-D and flat 2-D interface.

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.

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.