Multi-effect audio processor · Pre-release

RETROVERSE 90

Name: RETROVERSE 90
Brand: BUTZ AUDIO

1990s Character Engine

RETROVERSE 90 is a creative multi-effect processor designed to bring the character, warmth, texture, and atmosphere of the 1990s into modern music production.

One-time purchase

$39 USD

VST3, Audio Unit and Standalone for macOS
7 character modes and 14 factory presets
3 themes
Licence for up to 3 computers
Free updates throughout version 1
14-day refund
Windows: in testing

The RETROVERSE 90 plugin interface in the Midnight theme, with Tone, Vintage, Space, Movement, EQ, Stereo and Output panels above a row of character buttons.

automatable parameters

character modes

factory presets

themes

≈2%

of one M2 core

Audio demonstrations

Bring the character of the 90s into your studio.

Transform clean digital sounds into rich, textured, expressive sounds inspired by the golden era of music production.

Open the demo room

Dusty Piano

Sampled-from-vinyl piano: crunchy, filtered, a little crackle.

0:00 / 0:11

A loop produced by BUTZ AUDIO. Each processed clip is the same loop run through that factory preset in the RETROVERSE 90 engine, with nothing else changed. Preset names describe their intended instrument, not this loop.

What is inside

Six sections. One finished sound.

The signal runs in the order of a 90s production chain: sampled, coloured by console and tape, shaped and widened, then placed in space.

Tone

Warmth up front. Grit where you want it.

Six stages that take a clean signal from polished to played-out: low-mid body, tape, analog drive, sampler crunch and a resonant filter.

Vintage

One big dial for the whole decade.

The centre knob is the sound of the plugin. It adds saturation, limits the bandwidth, adds a soft vowel-like colour and glues everything together, all loudness-matched so you hear character, not just volume.

Space

Place the sound in the room.

Three reverbs, a tempo-synced delay and a depth control that pushes a source back into the mix instead of just washing it out.

Movement

Wide, without falling apart in mono.

Lush chorus and micro-pitch doubling for that thick 90s stereo, plus a width control built so the extra side signal cancels exactly when the mix collapses to mono.

EQ & Stereo

See what you are shaping.

Drag points on a curve drawn over the live spectrum to shape the tone, and watch the stereo image on a vectorscope with a correlation readout.

Output

Finish with texture.

Six noise layers, from vinyl crackle to room tone, sit on top of the finished sound. By default the noise follows your signal and fades with the tail, so silence stays silent.

Character modes

Seven sound profiles, one click each.

A character loads a starting point for the main knobs and sets how the engine behaves underneath, from saturation to chorus speed. Everything stays editable.

Boom Bap

Dusty, warm, slightly degraded sampler with raw, aliasing crunch.

90s R&B

Smooth, lush, wide and silky.

Dream

Slow, deep chorus, detune and a big modulated hall.

House

Bright, punchy and wide, with fast chorus and clean converters.

Vintage Keys

Warm electric-piano and mellow keyboard colour.

Tape Soul

Thick saturation, softened highs and more wow.

Lo-Fi

Obvious band-limiting, raw sample-rate colour and the strongest wobble.

Customize

Make it yours.

RETROVERSE 90 comes with 3 themes that change the look of the whole interface, never the sound.

Theme

Compatibility

What has been tested.

Host	Format	Status
FL Studio 21Audio Unit on macOS	Audio Unit on macOS	TestedLoaded, processed audio and the interface worked in hands-on testing.
FL Studio 2025VST3 on Windows, in testing	VST3 on Windows, in testing	TestedActivation, the theme menu and the DAW checklist worked in hands-on testing on one PC.
Logic ProAudio Unit	Audio Unit	Format validatedPasses Apple's AU validator. Not yet tested inside Logic Pro.
GarageBandAudio Unit	Audio Unit	Format validatedPasses Apple's AU validator. Not yet tested inside GarageBand.
Ableton LiveVST3 or AU	VST3 or AU	Testing plannedHands-on testing still to do.
CubaseVST3	VST3	Testing plannedHands-on testing still to do.
Studio OneVST3	VST3	Testing plannedHands-on testing still to do.
ReaperVST3 or AU	VST3 or AU	Testing plannedHands-on testing still to do.

Supported formats

macOS: VST3, Audio Unit (AU), Standalone
Windows: In testingVST3 is running on Windows 11 in testing. Windows is not available yet.

System requirements

macOS version: macOS 11 or laterBuild target. To be confirmed on the signed release.
Mac processor: Apple SiliconMeasured on Apple M2. Intel Macs have not been tested.
Windows: In testingTested so far on Windows 11, 64-bit.
Disk space: Under 100 MB

Technical

Channels: Mono to mono, mono to stereo, stereo to stereo
Sample rates: 44.1, 48, 88.2 and 96 kHz tested
Latency: About 3 ms, reported to the host and compensated automatically
CPU: About 2% of one Apple M2 core at 48 kHz stereo, all effects at maximum
Parameters: 46, automatable
Window size: Resizable, 70% to 150%

Licensing

License details.

Activation method: Offline serial number. No internet connection, account or dongle needed
Licence type: Perpetual licence for one person
Computers per customer: Up to 3
Updates policy: Free updates throughout version 1

Read the EULA

Releases

Versions.

v1.0.0To be announced

First public release, in preparation.

FAQ

Questions, answered.

What is RETROVERSE 90?

An insert effect that gives any track a 1990s production character: warm sampler grit, tape saturation and wobble, lush chorus, micro-pitch detune, mono-safe width, and atmospheric reverb and echo. Put it on keys, synths, pads, vocals, guitar, bass, strings or drum loops, then start from one of seven character modes or 14 factory presets.

What DAWs does it support?

RETROVERSE 90 is built as VST3 and Audio Unit plugins plus a standalone app, so it is designed for hosts that load those formats. Hands-on testing is still under way, and the compatibility table on the product page shows exactly what has been checked.

Is it compatible with FL Studio?

Yes. It has been tested in FL Studio 21 on macOS, using the Audio Unit version, where it loaded, processed audio and the interface worked. A Windows test build has also been tried in FL Studio 2025 on one PC.

Is it compatible with Logic Pro?

Logic Pro uses the Audio Unit version, which passes Apple's AU validation tool. It has not yet been tested inside Logic Pro itself. This answer will be updated once it has.

Is it available for Windows and macOS?

RETROVERSE 90 is being prepared for macOS, and Windows is in testing. A Windows build runs on Windows 11 in testing, but it is not available yet, so please do not buy expecting a Windows version until this page says it is ready.

Is the purchase a one-time payment?

Yes. RETROVERSE 90 is a one-time purchase, not a subscription.

All questions

One plugin. Endless character.

RETROVERSE 90, 1990s Character Engine.

See pricing