about
Divvvy is a browser-based stem balancer. It analyzes an entire session in one pass, identifies where instruments compete for the same frequencies, and applies corrective EQ that gives each element its own space while protecting the range it owns.
Divvvy is subtractive and non-destructive: it never boosts, never adds dynamics or spatial processing, and returns full-resolution stems that producers keep mixing in their own DAW.
Every export is verifiable against the source audio.
Drop your stems in. Divvvy resolves every collision against the whole mix at once, giving each instrument its own frequency space, with corrective EQ and nothing else.
No opinions. You take it from there.
what works best
This is close to the opposite of the usual "send the stems to an engineer" export. That one strips your decisions out on purpose. Divvvy reads them.
Export post-fader. Keep your rough balance.
The counterintuitive one, and the one that matters most. Divvvy measures contention as a share of each frequency band, so the levels between your stems are part of what it reads. Your faders already say what is foreground and what is bed, and nothing in the audio itself says that. At unity, a background pad and a lead vocal arrive as equals, and Divvvy can find a fight your mix does not actually have.
Export stereo stems that carry their panning.
Pan does not survive a mono export. If a part is placed wide, keep it wide on the way out — a mix that separates parts by position will look far more crowded than it sounds once that position is gone.
Print effects onto the stem they belong to.
A reverb or delay return exported on its own is diffuse and wideband: it has no home range to protect, and it looks nearly identical to whatever is feeding it. Printed onto its source, the same material reads as one element, which is what it sounds like.
One element per stem. Tracks, not busses.
A stem holding two instruments has no single range to protect, so it gets a compromise between them. Sending a bus and the tracks inside it is the same problem twice: that material enters the mix total twice, and every share it touches is skewed. Each stem starting at the top of the timeline, full length, keeps everything lined up.
None of this is enforced. Divvvy will analyze whatever you give it, and will tell you what it noticed about the export once the files are in.