Dry Vocal vs Live Preverb
A lead line, then the same bars with a reversed swell rising into every phrase.
Case No. 002 — Open
v1.1.1 · Mac + WindowsBacktrace
A reverb answers after the sound. Backtrace files its report first. Real reversed-reverb swells that rise out of silence and land exactly on the note that caused them — live on the insert, synced to your DAW, with a capture engine for printing reverse FX you can drag anywhere.
Or take both edges of the phrase: Backtrace + Getaway Driver for $79.
macOS 12+ · Apple Silicon & Intel · Windows 10/11 (VST3) · AU + VST3
- AU + VST3
- macOS 12+ · Apple Silicon & Intel
- Windows 10/11 (VST3)
Map the panel — what's what on the interface
- Evidence Scope — the swell drawn in layers: input, preverb lead, return tail.
- TIME & Feel — how far ahead the swell starts, synced to the host or free.
- Live Preverb — the switch that runs the swell in real time on the insert.
- Reverb Space — five rooms, each with its own deep controls.
- Delay machine — six machines and six tail routings for a second layer.
- Dust / Output strip — Pull, Tail, Ghost, Damage, Reveal, Width, Ringout, filters and mix.
- Open Dust Vault — source slots in, printed swells out, drag as WAV.
- Preset browser — organised by job, top right.
The problem it solves
The reverse-reverb trick is decades old and still magic — but the workflow never was: bounce the clip, reverse it, print a reverb, reverse that, line it up by hand, and repeat every time the arrangement moves. Backtrace does the whole investigation in real time, and when you want the printed version, it hands you the WAV.
Hear the evidence
Three exhibits, one rule: the dry take and the same bars through Backtrace — level-matched, one switch apart, named for the factory preset that makes it.
Clean Guitar vs Reverse Bloom
A clean figure, then each chord announced by its own reversed tail.
Hard Hit vs Printed Swell
A snare fill, then a printed reverse swell pulling the section into the downbeat.
- Exhibit A — Vocal · Vocal Lift
- Exhibit B — Guitar · Guitar Swell
- Exhibit C — Drums · Drum FX
The exhibits are being printed at the studio now — dry/wet pairs land here as they're finished.
Inside the machine
Two engines, two racks, one console — from the operations manual.
Engine · 01Live Preverb
Insert it, press play, and it happens in real time: a reversed swell that rises out of silence and lands exactly on the note that caused it. The swell is built from a real reverb tail — the plugin renders the kernel from the room you chose and convolves with it reversed, locked to your DAW’s tempo. No bouncing, no flipping, no re-printing when the arrangement changes.
SubtleA short kernel and low blend puts a breath before every phrase.
PushedLong kernels turn every hit into a cinematic rise.
Best onVocals, snares, section changes.
Pairs withGetaway Driver — Backtrace works the front of the phrase, Getaway the back.
DAW-SYNCEDREAL REVERSED KERNELPULL · SHAPELIVE ON THE INSERT
Engine · 02Capture & Print
The second engine is a workstation: drag a word, a hit, or a phrase straight in — from Finder or straight off your DAW’s arrange page — grow a real FX tail from it, reverse the tail into a swell, audition it forward or reversed, then print the result and drag it out as a WAV, sample-accurate.
SubtlePrint one word’s rise and tuck it under the original.
PushedGrow a monster tail, reverse it, and build the whole transition from one snare.
Best onSound design, intros, drops.
Pairs withThe Vault slots below — everything you print gets filed.
DRAG IN / DRAG OUTAUDITION TAILPRINT TO WAVZERO-LATENCY MODE
Racks · 03Five Rooms
The reverb plate that builds your swell: Velvet Hall, Modern Space, Ghost Shimmer, Phantom Plate, and Rust Spring — each flavor owns its full sound with its own set of deep controls.
VELVET HALLMODERN SPACEGHOST SHIMMERPHANTOM PLATERUST SPRING
Racks · 04Six Delay Machines
A second tail layer from six machines: Reel Echo (multi-head tape with wow, flutter, and degradation), Digital Pedal, Magnetic Drum, Tape Witness, Cold Rack, and Vault Delay — routable six ways around the reverb (swell, series either direction, parallel, post color).
REEL ECHODIGITAL PEDALMAGNETIC DRUMTAPE WITNESSCOLD RACKVAULT DELAY6 TAIL ROUTINGS
Console · 05The Dust Strip
Global macros that shape the printed swell: Pull, Tail, Ghost, Damage, Reveal, Width, Ringout, and Swell Level — with mono-safe M/S width and output filters. Thirty-one of the musical controls are real host parameters, so every move automates.
PULL · TAIL · GHOSTDAMAGE · REVEALWIDTH (MONO-SAFE)RINGOUT31 HOST PARAMS
Console · 06The Vault Slots
Two eight-slot evidence banks: Source Slots for what you drag in, Printed Swells for what you render. Slots rename, clear, and drag out as WAV files — the session’s reverse experiments stay filed, not lost.
8 SOURCE SLOTS8 PRINTED SWELLSDRAG OUT AS WAV
Filed evidence — the presets
The preset browser ships organized by job — Live Preverb, Vocal Throws, Reverse Blooms, Drum FX, Guitar Swells, Synth/Cinematic, Dirty Vault — with names that say what they do: Vocal Lift, Guitar Swell, Snare Halo, Big Riser, Tight Transition, Cathedral Rise, Ghost Vocal Rise, Tape Witness Slapback, Reverse Tail Pull, Full Reverse Evidence, and more.
Field techniques
From the manual
Engage Before the Tape Rolls
Start the swell ahead of the downbeat so the rise finishes exactly where the section begins.
From the manual
Pre-Echoes That Bounce Into the Hit
Route the delay ahead of the reverse so the swell arrives with rhythm, not just wash.
From the manual
The Reveal Sweep
Ride the Reveal macro through a transition — the swell uncovers itself into the drop.
Eight field techniques ship in the manual’s FILE 10, from “Engage Before the Tape Rolls” to “Let It Ring.”
Filed together · The Getaway Pair
The other half of the phrase
Backtrace works the front of the phrase — the rise that leads the voice in. Getaway Driver works the back — the throw that blooms after the line ends. Together they own both edges of every phrase in the arrangement.
$79
for both · instead of $98 · you keep $19
One checkout, two permanent licences — each for two of your Macs.
Open the case
Backtrace · Full License
$49
One-time purchase. No subscription. Or both edges for $79.
One-time purchase, no subscription. Your licence code arrives the moment payment clears and works on two computers. 14-day refund.
- Formats: AU + VST3, 64-bit
- Platform: macOS 12+ · Apple Silicon & Intel · Windows 10/11 (VST3)
- Activation: a licence code — no iLok, no account; two of your Macs
- Offline: checks in once a month; works offline in between
- Installer: signed & notarized on Mac, 12 MB
- Support: direct line to the studio
The dossier — where it stands
Statusv1.1.1 — running in real sessions now; a public trial follows
FormatsAU + VST3 — macOS 12+ · Apple Silicon & Intel · Windows 10/11 (VST3)
Already running inLogic Pro · GarageBand · Ableton Live · REAPER · FL Studio (Aug 2026 test matrix)
LatencyCapture/Print: zero. Live Preverb: latency reported to the host for delay compensation (applied on playback)
Automation31 host-automatable parameters, IDs frozen
Price$49 one-time · $79 with Getaway Driver
Cross-examination — FAQ
Is this just a reverse reverb?
No — reverse reverb is one move it makes easy. Backtrace is built around swells, tails, and transitions as playable, printable effects: two engines, five rooms, six delay machines, and a vault for everything you print.
How do I buy it?
Add it to your cart from this page. It's $49 on its own or $79 with Getaway Driver, one-time, and the licence code arrives the moment payment clears.
Will there be a trial?
That’s the plan. The 14-day trial system already runs live for Dust 12.47; Backtrace follows the same road when it ships.
What formats will it support?
It builds as VST3 and AU for macOS today. Anything beyond that gets announced when it’s true.
Where can I read more?
The full operations manual is already published — read it here.
The tail comes before the voice.
Backtrace is running in real sessions right now. The case file list hears new evidence and every update first — $49 on its own, $79 with Getaway Driver.