Name: Coil
Brand: Desert Moon Audio
Price: 49.00 USD
Availability: InStock

Spring Reverberator

Why a spring sounds like a spring

Coil is a spring reverb plugin for Mac and PC: seven tanks, with the drip, the tension and the boing each on its own dial.

14-DAY FREE TRIAL

Full version, free for 14 days. No payment details needed.

Works with all major DAWs

AU / VST3 / AAX for Mac · VST3 / AAX for PC

Yours forever — no subscription

Instant download after purchase

Hear the difference

Press play to hear it through Coil. Tap DRY for the original, at the same moment.

Keys

Vocals

Electric

Snare

Where it goes

Four of the places it lives, each with a demo above.

Keys
A long tank under an organ or a Wurlitzer: the drip is the point.
Hear it
Vocals
A short, tight spring on a vocal is the garage-rock halo no plate can do.
Hear it
Electric guitar
The amp-top spring, with the tension and the boing set to taste instead of fixed.
Hear it
Snare
SHAKE the tank on a snare hit and you have the sound of a reverb unit being kicked.
Hear it

About Coil

A spring reverb is a coil of wire with a transducer at each end — and below its transition frequency, the waves in that coil are dispersive: the highs travel faster than the lows. Twang a spring and every echo arrives as a little downward chirp. That drip is the spring sound, and it is the thing most digital springs approximate instead of building.

Coil builds it. Every spring is a feedback loop carrying a cascade of up to 160 allpass filters shaped like the physics, so the chirp is real — and because it is real, it has dials. Decay reaches from 0.2 to 20 seconds, far past any hardware damper. Drip takes the dispersion from zero to cartoon. Tension retunes the whole pan. And the boing — the thump every hardware pan added whether you wanted it or not — is finally a knob.

Key features

Seven tanks
Surf Twin, Trio, Vienna, Hex, Brick, Dub Box and Vault — from drippy valve-driven surf pan to dark studio twin-tank to a six-spring flagship no factory ever built. Level-matched by measurement, so switching compares character, not loudness.
Decay, 0.2 to 20 seconds
Calibrated — 2 on the dial measures two seconds.
Drip, Tension and Boing
The spring signature, the coil tightness and the longitudinal thump, each under its own dial.
SHAKE
Kick the pan and let the springs crash — the classic spring-tank stunt, on an automatable key.
True stereo
Two complete detuned spring banks, no widener anywhere in the path.
The studio bar
Presets, A/B comparison, undo and redo, freeze, ducking, and a panel that resizes without losing a pixel.

The panel at a glance

Tank selector Seven tanks, from drippy surf pan to a six-spring flagship. Level-matched, so switching compares character, not loudness.
Shake, Freeze, Tweak Kick the pan and let the springs crash, hold the tank open, or turn to the second page.
Overload lamp Glows as the springs are driven; white-hot at clipping.
Decay 0.2 to 20 seconds, calibrated: 2 on the dial measures two seconds.
Drip The dispersion that makes every echo a downward chirp, from zero to cartoon.
Tension Coil tightness: retunes the whole pan.
Boing The longitudinal thump every hardware pan added, now on its own dial.
Filter Low and high cut. Keep the bass out of the springs: it is the biggest single improvement to any spring sound.
Mix Dry against reverb, with Input and Output alongside.

More details

Yes — 14 days, fully featured, from the first time the plugin loads. Every tank, every control, no interruptions and no signup. When the trial ends, audio passes through dry until a license is entered, so your sessions are never damaged.

Yes. It's a one-off purchase, not a subscription, and there's nothing to renew. Updates to a plugin you own are free — download the current installer and run it over the top.

Every plugin is sold on its own, so you can buy just the one you want.

Your license covers up to 4 computers you personally own — studio desktop, laptop, spares. Enter the same key on each; the first activation on a machine takes one quick internet check; after that it works offline, apart from a once-a-day check for a newer version. Moving on from a computer? Deactivate This Machine in the plugin's preset menu hands the seat back, and if a machine dies before you can, just ask us.

Your download link and license key are in the order confirmation email sent at purchase. Run the installer, open Coil, click the notice on the black band, paste the key — done.

Can't find the email? Check spam, then contact us and we'll resend it.

Yes — after activation. Entering your license key needs an internet connection once; from then on it works offline — the only other time it goes online is a once-a-day check for a newer version.