A free audio mixer for Windows that is not a demo

What "free" usually means in mixer software

Search for a free audio mixer for Windows and you mostly find two kinds of results: aging freeware that technically works but fights you at every step, and free editions of paid mixers where the routing you actually came for sits behind an upgrade button. Both leave you wondering whether the thing you are learning is the real product or a teaser for it.

A virtual audio mixer only earns its place if it does the whole job: give every sound source its own strip, let you route each source to exactly the destinations you choose, and clean up your mic on the way through. patchd's free tier is designed to do all of that, not a slice of it. It is worth being upfront about one thing before the list: patchd is in development, so everything below describes what the free tier will include at launch, and the only thing you can do today is join the waitlist.

The free tier, item by item

This is the full roster, with real counts. No asterisks.

• Your microphone on its own strip, with a fader, a live meter, mute, solo, and its own effects rack. Free covers two selectable inputs: your mic plus one virtual cable, which pulls any single app, your music player or your game, onto its own strip.
• Desktop and Communications strips, always present. Desktop carries your system audio and Communications carries your chat apps, so the everyday sources are on strips before you configure anything.
• Three hardware outputs for your real devices: headphones, speakers, a second pair, whatever you plug in.
• Three color-coded buses, cyan, violet, and magenta, each a clean virtual mix you assemble by lighting routing pills. A source reaches a destination only when you route it there.
• The effects rack with all 14 free nodes, added from the + Add Node menu on any channel: AI noise suppression, a noise gate, a compressor, a parametric EQ, a de-esser, a limiter, expanders, and more. The full mic-cleanup chain is free.
• Any bus can present itself as a microphone in other apps, so your streaming, recording, or calling software receives one finished mix instead of a raw device.
• Honest latency: about 10.7 ms through the bus at a 512 buffer, and smaller ASIO buffers take it lower.

Why this is not a demo

The free tier runs the same engine as the paid one. It locks onto the fastest audio path your device offers, ASIO first and WASAPI Exclusive otherwise, automatically, and reports the result in a read-only master clock readout: the source it locked, the sample rate, and the live latency in milliseconds. There is no artificial delay penalty, no watermark, no nag timer. The differences between tiers are counts, not capabilities.

That means the workflows this site teaches all work on free. You can keep a private call off your stream because Communications is its own strip and you simply never route it to the broadcast bus. You can keep music in your headphones only. You can route your desktop sound to a bus and record it in the capture app of your choice, because patchd routes and your recording app captures. One count to plan around: free includes one virtual cable, so you can split one app onto its own strip at a time, on top of Desktop and Communications.

What Studio raises

Studio ($39.99 per year) is the same mixer with bigger numbers. It raises the two selectable inputs to five in total, your mic plus four virtual cables, so game, music, browser, and one more app can each hold a permanent strip. It raises the three buses to six in total. Hardware outputs stay at three. On the rack, Studio unlocks the 22 voice-fx nodes on top of the 14 free ones, 36 nodes in all. And in Persona, patchd's voice changer, Studio opens the full voice roster, while free ships with six rotating taster voices.

Notice what is not on that list: routing, buses as microphones, meters, the mic-cleanup chain, and the low-latency engine. Those are the product, and they are free.

What you can build with the free tier on day one

A few concrete setups the free counts cover comfortably. A streaming setup: mic and game on strips, one bus assembled as the broadcast mix, your headphones carrying a private mix that includes the call your viewers never hear, and the bus selected as the microphone in your broadcast software (the OBS walkthrough covers that handoff). A meeting setup: mic cleaned up with a gate, suppression, EQ, and a compressor, routed to a bus your calling app treats as a very good microphone. Or the trick of using any app as your microphone, which needs exactly one cable and one bus.

Where patchd is today

patchd is in development, so there is nothing to download yet, and any page that tells you otherwise is not being straight with you. What you have read here is the launch scope of the free tier, stated plainly so you can decide now whether it fits your setup. If it does, join the waitlist below and we will tell you the moment it is ready.