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Give Your Sound a RUSH!

Spectdrum listens to any sound and carves a living groove out of it.

Four frequency bands. One grid. Your sound becomes the rhythm.

Launch price.

Back to $99 after October 28!

Windows and macOS. Nothing expires.

Instant license by email  ·  Windows and macOS  (VST3 and AU)

There is a rhythm hiding in every sound.

Take a pad. A drone. A string patch. A vocal. A field recording. Anything that just sits there.

Spectdrum splits it into four frequency bands and plays each band as its own rhythmic voice. The lows punch. The mids snap. The highs tick and shimmer. Nothing is added from outside: no samples, no synthesis. Every hit is carved from your sound, so the groove keeps the color, texture, and character of the material it came from.

That is why no two Spectdrum grooves sound the same. Your sound is the groove.

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Spectdrum multiband gate sequencer, dark skin

If you have used a trance gate, you already know the feeling. Spectdrum is four of them, one per frequency band, each running its own pattern, so the lows can play one rhythm while the highs play another.

Make it PULSE!

Drag the slider from the raw sound to the groove Spectdrum found inside it.

SYNTH PAD

Your next beat is hiding in a pad.

A warm static saw pad goes in. A driving four-on-the-floor groove comes out. Same sound, same color, new heartbeat.

STRINGS

Make any sound move.

A slow string chord progression becomes a cinematic train beat. The rhythm carries the exact timbre of the section.

VOCAL

Teach your sounds to dance.

A held vocal turns into a dirty industrial rhythmic texture that still sounds unmistakably human.

NOISE

Bring dead sounds to life.

A flat noise layer becomes a full groove with air on top.

The least musical sound in your library, grooving.

GUITAR

Carve the groove out of anything.

A simple acoustic guitar loop becomes a dark syncopated pattern, with a distorted character to give it extra flavor.

Every "after" you hear is 100% the "before", sculpted live by Spectdrum. No samples were harmed. Or used.

Hear the presets

Factory presets, played on ten different sources, back to back. No voice, no explaining. Just what they do to real material.

"Great presets to start from and really lose yourself in all the different possibilities, or to simply use as is because they're awesome."

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Hagit Kate Harel

עיתון עם חותמת שעווה - מחשב.webp

Under the hood.

Spectdrum is an insert effect.

Drop it on any track, press play, and it does the rest.

Spectdrum four frequency bands
Four bands. Four instruments.

Sub, Low-Mid, High-Mid, Air. Each band has its own frequency range, filter, pitch, drive and stereo width (on the Sub, a mono control). Solo the Sub and shape the low pulse. Push the Air and let the top end shimmer. One sound in, a full groove out. In DAWs that support it, each band can also go out on its own stereo output, to a channel and effects of its own.

Spectdrum step sequencer grid
A sequencer that thinks in polyrhythms.

Each band runs its own pattern: 1 to 32 steps, independent lengths, per-step velocity and step length, and swing. Let a 7-step Sub roll against a 16-step Air and watch the groove evolve for bars. Roll the pattern dice and choose what it may change: positions, velocities, lengths. Patterns respond to MIDI, so you can play them like an instrument.

Spectdrum filter automation lane
Envelopes you draw by hand.

Volume, filter, pan, and pitch, drawable per band as free curves. Make a hit swell instead of snap. Sweep the filter across a bar. Dive the pitch on every hit. If you can draw it, the band plays it.

Spectdrum's pattern dice in generative mode: a blue-outlined die showing three pips
A groove that writes itself.

Switch on GENERATIVE and each band invents its next pass on its own cycle, as boldly as you set the dice. Your own pattern stays as the seed, so the groove keeps moving without losing the idea you started with.

Spectdrum delay module
A finished sound, inside the box.

Per-band reverb and delay sends for depth and space, plus a master strip with filters, distortion, EQ, and a maximizer. Sound design to polished groove without leaving the plugin. A full bank of factory presets to start from, with folders and type-to-jump in the menu.

A musician holds an iPad and taps a step on Spectdrum's TouchOSC surface, controlling the plugin over OSC from a touch screen
Play it from a touch screen.

Spectdrum speaks OSC natively, in both directions. Open the ready-made TouchOSC surface that comes with it and tap in steps, draw envelopes, switch patterns and roll the dice with your fingers, on the same computer or from a tablet on your network. Every move you make in the plugin shows up on the screen too. No MIDI mapping, no bridge app. TouchOSC is sold separately.

The full manual is open to read right now, no purchase required.

See it built, start to finish.

The full walkthrough. Every band, every envelope, every effect, on real tracks - so you know exactly what you are buying before you buy it.

Jim Aikin, former Keyboard magazine editor, reviews Spectdrum: “I’ve used Alligator a lot, but I’ll be using Spectdrum from now on.”

Built by a musician, for musicians.

Hagai Davidoff, composer and sound designer, smiling at the mixing console in his recording studio.

Spectdrum is developed by Hagai Davidoff, a composer and sound designer with three decades of work in music production, theater, and education. Thousands of producers worldwide use his Kontakt instrument expansions. Spectdrum is the tool he wanted for his own studio, refined through months of daily use on real productions before release.

Pulse Audio Developer Spotlight 25 quote: "the most interesting sounds often come from the simplest starting points." Interview with Hagai Davidoff, October 2026

What people are saying.

"I took a song arrangement I made on my MPC and added the demo to the melodic sample chop track; mind blown! This opens so many possibilities for textures to interesting rhythmic patterns using my sketched out ideas. Bought it last weekend, and this walkthrough is so helpful. Many thanks for making a great creative plugin."

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@velanche

"The polyrhythmic capabilities, the envelope flexibility, and the built-in effects make this an absolute sound design powerhouse. You can immediately hear how musical and inspiring Spectdrum is."

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Yossef Elitzur

"It's simply genius. It doesn't just save you the time it takes to turn inspiration into a finished piece. It flips the whole thing around and creates the inspiration itself."

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Ariel Baruch

"When you blended the mix my jaw dropped. Yep. This one's special."

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@BpackAudio

GET SPECTDRUM

✓ One-time purchase, no subscription.

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✓ Instant delivery: license code by email, activate in seconds.

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✓ One-time online activation, then works fully offline.

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✓ Install on up to 3 of your own computers.

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✓ Free updates, no subscription and no upgrade fees.

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✓ Windows & macOS. VST3 on both, AU on Mac for Logic & GarageBand.

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✓  Payment in Israeli shekels; your card converts automatically.

 

✓ Full manual, free to read before you buy.​​

Spectdrum 2.60 launch sale: $69 instead of $99, until October 28

SECURE CHECKOUT · SSL · PAYPAL · ALL MAJOR CARDS

Specs.

Format:  VST3 and AU, 64-bit

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Platform:  Windows 10 / 11 · macOS 10.15 and newer, Apple Silicon and Intel

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DAWs:  Any VST3 host: Cubase, Ableton Live, FL Studio, Fender Studio, REAPER and more.

On Mac, Logic Pro and GarageBand via AU.

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Activation:  Email + license code, one-time online check, offline forever after

Questions, answered.

Stop programming rhythm.
Start discovering it.

Spectdrum logo

MAKE IT PULSE!

Spectdrum multiband gate sequencer, light skin
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