Mix in 3D. Stay in stereo.
Every track of your mix in one shared 3D room. Place each sound left and right, near and far, and up off the floor, while the mix stays ordinary stereo. No Atmos, no surround setup.
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VST3, AU & AAX· Windows & macOS
Press play and hear the song in plain stereo. Then turn on Atrium. Put on headphones.
In the plugin, every sphere drags anywhere in the room.
A panner only moves sound left and right. Atrium places it in a 3D room. Each track is a sphere: where you put it is where you hear it.
Height without Atmos. Hold Shift and drag up, and the sound lifts off the floor. Works on headphones and speakers.
Set the room's width and length, then pick what the walls are made of. Concrete and heavy velvet sound nothing alike.
23 room presets to start from: drums, full band, orchestra, vocal, electronic. Space, Decay and Mix shape the rest.
Pick a room
Default / Init Room: 11.8 by 14.8 metres, Plywood walls.
Size
11.8m
wide
14.8m
long
Walls
10 materials, straight from the plugin's menu. Soft rooms like Heavy Velvet stay dry and close. Hard ones like Glass and Steel Plate ring and shine.
Not sure where everything goes? Pick a seating chart, from drum kits and bands to choirs and orchestras. Ghost shows each seat at its real height, and Snap drops your track onto one: position, depth and height in one move.
Groups. Give the drums a tight room of their own while the band plays in a bigger one. Change a group's room once, and every track in it follows.
Put Atrium on every track you want in the room. Each one joins the same room as a sphere named after its track.
Open any instance and you see the whole mix. Pick a track by clicking its sphere, or from the menu, and move it from there.
Azimuth, Depth, Elevation and Source Width follow every drag. Use the knobs for an exact value; double-click one to reset it.
Hold Shift and drag. The sound rises above the mix, on ordinary speakers and on headphones.
Moving a sound back changes the balance of its direct sound and early reflections. The tail stays where you set it, so the mix gets deeper without getting muddier.
Width and length in meters, 10 wall materials, 23 room presets. Advanced adds 3D Gain, Punch, Distance and Proximity, so close drums keep their punch and a vocal feels close up front.
Eight groups: Main, Drums, Band, Vocals, Strings, Brass, Keys, FX. Each has its own room. Collapse pulls a whole group to the centre and back out, and your positions stay put.
Crossfeed has a Speaker and a Headphone mode. In Headphone mode, Externalize moves the sound out of your head and into the room.
Width works on the side signal, so the mono sum stays the same. Mono Below keeps the low end centred. Mono-Guard shows the correlation and lets you audition mono and sides.
We make records too. Every mix we did hit the same wall: left and right is one line, and everything fights for a spot on it. More reverb only pushed things further away and made them muddier.
Records we love have depth and height. We wanted that in a normal stereo mix, without an Atmos room.
Left and right was just the start.
Four knobs place a track. Click ADVANCED and the rest of the engine opens over the room.
Tail Cut darkens the tail. ER/Tail balances the reflections against it. Tail Duck pulls the tail down on every hit so the mix stays clear. ER Send sets the level of the early reflections. These belong to the room, so every track in it hears the same space.
3D Gain sets how much moving a track toward or away from you changes its level. Punch lifts the transients of tracks up front, by up to 6 dB, without pushing the reverb harder.
Space opens the early reflections first, then the tail. Decay sets how long the tail rings, from 0.15 to 3 seconds. Mix blends the dry and processed sound.
Tail Cut darkens the tail. ER/Tail balances the reflections against it. Tail Duck pulls the tail down on every hit so the mix stays clear. ER Send sets the level of the early reflections. These belong to the room, so every track in it hears the same space.
Room Width and Room Length set the room from 4 to 30 metres wide and 4 to 40 metres long. The reflections and the room on screen follow.
HRTF Depth sets how much head-related colouring you hear. Width spreads the sound without ever changing the mono sum. Distance sets how much a track falls away when you push it back, and Proximity adds the close-up bass and ear difference of a source right in front of you.
Mono Below sums the bass to mono below a frequency you pick, up to 250 Hz. In Headphone mode, Externalize moves the sound out of your head without touching the mono sum.
Also in the drawer: Speaker or Headphone crossfeed, each track's name and colour, the listener head, and Mono-Guard, a lamp plus MONO and SIDE buttons to check the mix in mono.
On every track you want in the room: one instance per track. They all share one room, so any window shows and moves the whole mix.
No. Atrium prints ordinary stereo. It works on monitors and on headphones, with a Crossfeed mode for each.
Height in stereo comes from tone and room sound, not from a speaker above you. How strong it feels depends on your system and your ears, so judge it on the trial with your own mix.
Don't, until you've compared. Bypass switches Atrium off on every track at once, so the A/B is one click on the same mix. Match the loudness before you judge.
Not here. Depth comes from the balance of direct sound and early reflections. Decay stays where you set it, so far sounds don't smear the mix.
Width only touches the side signal, Mono Below keeps the lows centred, and Mono-Guard lets you hear the mono fold before anyone else does.
Yes. Put your DAW in automation record, open the track's own Atrium window and drag its sphere while the song plays. Azimuth, Depth and Elevation are written to that track.
Pick a room preset and a seating chart, snap your tracks to their seats, then move what needs moving. Seats are suggestions; nothing is locked.
Every control, every menu, from the first insert to the finished mix.
Download the Atrium user manualSeven days, the full plugin, every feature unlocked. Put Atrium on a song you already know, then hit Bypass.
