Inside UDW-CE

17 Presets
13 Instrument Sample Maps
Up to 31 Round Robins


The Dark Sounds of Aztec Death Whistles (Collector's Edition)

Ultrasonic Death Whistle (UDW) was designed as an introduction to our powerful MNDALA 2 Engine. The combination of these two opens the door for unparalleled creative possibilities and unlimited sound design.

The Collector’s Edition (CE), only available for the Halloween season, includes a brand new look, an homage to Día de los Muertos and the spirits that lend their voices to each of these unique death whistles.


Proprietary Engine

VST/AU Plugin included. No additional software required.

3-Axis Universal Controls

Simply map your favourite controller once for all plugin instances.

Intuitive Performance GUI

Custom animation driven performance interface & mouse hover interactions.

Industry Leading Audio Quality

384khz/32-bit extended ultrasonic range sample sources



Production Demo: Inside a track with UDW CE!
Production Demo: Inside a track with UDW CE!
Ultrasonic Death Whistle Teaser
Ultrasonic Death Whistle Teaser
Ultrasonic Death Whistle
Ultrasonic Death Whistle

Listen to UDW-CE

The Story of UDW-CE

The UDW Collector’s Edition (CE), only available for the Halloween season, includes a brand new look, an homage to Día de los Muertos and the spirits that lend their voices to each of these unique death whistles.

Performed by our founder, composer & multi-instrumentalist Brian D’Oliveira, UDW-CE offers a window into our collection of rare pre-Colombian death whistles that were found during our research and development. Some of the death whistles were even handcrafted in our studio to expand their creative sound possibilities, and many of them were featured in the production of award winning AAA video game soundtracks.

UDW’s video-game audio-inspired interactive scene allows for non-linear multidimensional control and patch creation for intuitive, yet seamless musical expression.

Each death whistle is named to represent their characters. Having been sculpted by hand, their sounds are recognizably unique, each sample map representing a different death whistle.

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What's Inside?

Death Whistles

  • Yuuali (Night)
  • Yuualtotome (Night Bird)
  • Ehecatl (Wind)
  • Tlilcoatl (Viper)
  • Ixehua (Ghost)
  • Coyochoca (Coyote)
  • Izhuayo (Forest)
  • Ixpoctic (Vision)
  • Cuaxicalli (Skull)
  • Ozomatl (Monkey)
  • Tecuyoa (Howl)
  • Huentlalia (Altar
  • Tzatzllia (WarCry)

Animistic Performance Interface

Control a deep network of parameters with 3 real-time rendered animations

Technical Specifications


→ Recorded at extreme definition 32-bit 384kHz ultrasonic resolution
→ CPU-efficient in-engine playback at industry-leading 24-bit 96kHz resolution


→ VST3 / AU plugin for Windows & Mac OS (10.11+) Including M1 Chip
→ No fuss copy protection, simply install and the instrument is uniquely encrypted to be used within your system
→ Seamless downloads, updates, and installation within MNDALA with a registered Mntra account

File Size

→ 13 multi-sampled instruments
→ 4GB installed, 9GB recommended for setup

System Requirements

→ Minimum 8GB of RAM and an i5 or better CPU required
→ Supported by all 64-bit VST3/AU compatible DAW’s

* Mixcraft 9 Pro is not supported

First time user of Mntra Instruments?

Make sure to download our free MNDALA 2 Engine VST3/AU plugin.

Simply install once and you will be able to run all of our instruments.

Our approach to creating revolutionary instruments

Continuous play and the pushing of creative boundaries are foundational to our instrument creation process. Rather than trying to recreate true-to-life instruments, we choose to experiment and go off the beaten track, in search of a new kind of virtual instrument.

Inspired by the natural world and ancient knowledge from around the world, we embrace expressive (im)perfections. Performing and recording instruments using experimental methods to create sounds like you’ve never heard before.

From our bespoke extreme-quality recording method using ultrasonics, to our constant experimentation with unique workflows and sound sources, each Instrument we release is a playable manifestation of our exploratory journey.

During our sampling process, the subtleties and imperfections of live human performance are embraced and encouraged. Depending on the final intent, we will creatively post-process as little or as much as needed (sometimes beyond recognition), always making sure that the soul and character of the performance is intact once it’s been implemented as one of our expressive playable instruments.

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