Vienna MIR Pro 3D

Name: Vienna MIR Pro 3D
Price: 403.1 USD
Author: Vienna Symphonic Library

by Vienna Symphonic Library · Reverb · Multi-impulse-response room and 3D mixing

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Vienna MIR Pro 3D by Vienna Symphonic Library

A mixing and reverb engine that places each instrument in a sampled concert hall or studio using many impulse responses per room (Multi Impulse Response), with stereo, surround, immersive and Ambisonics output.

It runs as an AU, VST3 or AAX plugin with one MIR 3D RoomPack included; VSL lists it from €355 (about $403), with the full version at €745.

Best for: Acoustic Instruments, Mix Bus, Sound Design. Genres: Ambient & Cinematic, Jazz, Acoustic & Classical.

Keywords: spacious, mixing, room, impulse-response based, hall, orchestra, cinematic, AAX, bus processing, full mix, mix bus, sound design, wide.

What it does

Vienna MIR Pro 3D is VSL's room-and-placement mixer: you put each instrument or audio track at a spot on a virtual stage, and MIR applies the room response captured for that exact position and direction. VSL wants you to work "more like a conductor than an engineer".

Multi Impulse Response: each room is sampled with many impulse responses across the stage, so moving or turning a source changes how the hall answers it.
MIR control icon: place each signal in a 3D room and adjust its volume, stereo width, 3D direction, directivity and dry/wet balance on a visual stage plan.
Instrument profiles: VSL also took each instrument's natural volume, frequency response and stereo dispersion into account, not just the stage position.
Output formats: from stereo and surround to immersive formats up to 9.1.6, and raw Ambisonics up to third order.
Rooms: one MIR 3D RoomPack of your choice included; seven packs exist, including Vienna Konzerthaus, Teldex Studio, Synchron Stage Vienna, Pernegg Monastery and Salzburg venues, sold separately.
Editions: MIR Pro 3D (24) handles up to 24 instruments or audio signals; the full version has no channel limit, and you can upgrade from one to the other.
Extras: Sound On Sound notes a bonus reverb plugin, MIRacle, and optional GPU acceleration with the Vienna Power House add-on, which it found cut CPU load by up to 50%.

The product page lists version 3. Vienna Ensemble Pro is not required. It comes in a 24-instrument version and a full version, and Vienna Power House is also available. A 30-day free trial is available.

Source: Vienna Symphonic Library product page

When to use it

MIR Pro 3D is the pick for building a whole orchestral or hybrid mix inside one real hall, with every instrument placed and the output going to stereo, surround or Atmos. Compared with LiquidSonics Cinematic Rooms Professional and FabFilter Pro-R 2, it is less a reverb on a send and more a virtual stage for the full template, using sampled rooms instead of algorithms. That makes it slower to set up and far more expensive once you add room packs, but placement stays consistent across dozens of tracks. Against VSL's own Synchron Stage Reverb, it covers many venues, rotation and immersive formats, where the cheaper plugin offers one hall and nine fixed positions. For pop and rock mixing in stereo, its depth is mostly wasted.

Best for: orchestral composers mixing large templates, hybrid scores that mix live and virtual players, and immersive or large-venue mixes.
Genres: cinematic, classical, game music and orchestral hybrid.
Look elsewhere if: you just need a good reverb on a few tracks or mix pop and rock in stereo; Pro-R 2 or VintageVerb are simpler and much cheaper.
Tip: Mix suggests placing sources for depth and separation instead of using reverb sends, and using the room EQ to control low end.

What producers say

Reviewers rate it as one of the most realistic ways to place instruments in a real space, with cost and complexity as the main drawbacks.

Sound On Sound (Trevor Michael, September 2024) praised the sound and spatial realism and found 45 channels folded to stereo kept "clarity and detail in the mix".
Mix (Rich Tozzoli) called it "a tool that changes how I think about mixing", and liked it for hybrid scores and large venues such as planetariums and IMAX.
Usage tips (Mix): use the secondary microphone for height and ambience, and put synths and pads in a concert hall for a cinematic scale.
Criticisms: both note the high price, especially with extra room packs; Sound On Sound adds a steep learning curve and strict hardware needs for the paid GPU add-on.

Where to buy

Vienna Symphonic Library: $403.10 (Listed from €355 (version limited to 24 instruments; full version €745, about $845.95); converted at €1 = $1.1355 (ECB rate, 29 Sep 2026))
Best Service: $834
PluginFox: $834

Tutorials and reviews

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