SFS Audio · Cinder · in your browser
A four-knob drive plugin built on the Transfer beam: across is what goes in, up is what comes out. A clean signal traces a straight diagonal; everything Cinder does bends, flattens, roughens or tilts that line.
Cinder is a plugin for macOS 11 or later, on Apple silicon and Intel: VST3, AU and Standalone. $15 until December 31, then $29. More about Cinder, and buying it
A browser version, running Cinder's own engine on the loop, your sample or your keys. Presets you save stay in this browser.
| Knob | On the knob | On the screen |
|---|---|---|
| Drive | Draws its own saturation curve; the live signal lights the part in use. Flick it to surge, and it springs back, showing where it will turn | The beam bends into an S and its ends flatten and glow. While flicked, a dashed curve shows where it will turn |
| Shape | Morphs the curve through Soft, Tube, Hard and Fold, catching at each | The S softens, leans, squares off or folds back on itself |
| Excite | Sparks rise off a bed of coals: more as you turn it up, brighter the more Excite is adding | A fine fizz along the line |
| Output | A lamp lit by the output level, with a halo that holds its peak. With MATCHED on, Cinder level-matches what Drive, Shape and Excite add at the −18 dBFS reference, so Output trims around 0 dB | The whole beam tilts steeper or flatter; the OUT meter moves |
| Mix | A slider in the screen's legend, between BYPASS and YOUR CURVE | Your curve relaxes toward the diagonal as the dry signal comes back |
TryStep through the presets with ‹ ›. Start the loop, set Shape to Tube and slowly raise Drive: the diagonal bends and its tips go white. Flick Drive hard and let go. Press the smiley to bypass: the beam falls back to the diagonal.
In the pluginCinder oversamples 8× at 44.1 and 48 kHz, or 16× in HQ (click 8× in the footer), and level-matches at the −18 dBFS reference until you switch MATCHED off at the OUT meter. Drive at zero is clean. This page runs the same engine.
Knob contractDrag up or right · Shift fine · double-click resets · arrow keys when focused. A quick flick on a throwable knob swings it and springs it back; a slow drag just sets it.
NameCinder: the ember still glowing after the flame, which is where the heat in a drive lives. The nameplate’s letters are lamp filaments that burn hotter as Drive and the signal rise and cool when you bypass it, with embers lifting off them.