Duono

Turn a mono source into a wide, natural stereo image with a single knob — then fold it back to mono and get your original signal back, sample for sample. Wide where it counts. Identical where it matters.

Most wideners make you choose. Duono doesn't. Width or a clean mono mix — you usually get one at the expense of the other. Duono gives you both, by design.

Mono-safe by construction: Fold Duono's output to mono and null it against the dry signal and you get digital silence. It isn't "good enough," it's identical — sample for sample. Many wideners can't pass this test.

No tonal coloration: Duono only ever adds energy to the sides — it never carves notches out of your sound. Its two channels differ in phase, not level, and stay dead-balanced. Allpass-based wideners smear phase instead, leaving comb notches and lopsided levels.

The null test: Prove it in your own DAW. Put Duono on a mono source and widen it, then duplicate the track and sum Duono's stereo output back to mono. Play that against the untouched dry signal with one of the two tracks' polarity flipped: the duplicates cancel out completely, leaving a flat line — silence. Most wideners leave an audible residue here. Duono leaves nothing.

Made for organic, multi-frequency material: bowed strings, whistles, harps, double bass, voices, lush pads — sources that spread energy across dozens of partials at once. Each partial lands in a slightly different spot in the image, exactly how a real instrument radiates into a room. They bloom into a wide, three-dimensional picture instead of sounding "processed."

One Width knob, 0–100%. That's the whole plugin. No menus, no modes, no mono-check switch — because there's nothing to check.