UpM1xer

max1mus audio releases UpM1xer — A Spatial Audio Upmixer Built for Music

Introducing UpM1xer by max1mus audio — a first-of-its-kind upmixer plugin built for music production.

Until now, upmixer plugins have been built for post-production, with a price tag to match. UpM1xer is made specifically for music production — designed for use on stems in Dolby Atmos, Apple Spatial Audio, and surround mixing workflows.

At its core is an intuitive dual-selection system. Choose a source profile matched to your stem type — Drums, Vocals, Harmonic, Pads, Bass, and more — then pair it with a spatial engine that defines the character of the result: Subtle, Natural, Wide, Deep, Elevated, or Expansive. Together, these two parameters shape the algorithm to deliver a result that's purpose-built for your material.

From there, the Immersion knob scales the internal DSP parameters together, giving you simple, unified control over the strength of the spatialization. A built-in mixer lets you blend the level of each output channel post-DSP, with group knobs for easy automation.

Key features:
• 2 diffusion modes with per-group control
• Transient shaping
• LFE sub synthesis
• Surround channel shelving EQ
• 3D spatial Visualizer
• A/B/C/D comparison slots
• Easy Mode for a simplified workflow
• Light Mode
• Low Latency Mode
• Exact Mode for 100% ITU-compliant downmix compatibility.

Available in VST3, AAX, and AU — supporting up to 7.1.4 surround systems.

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Introductory offer: 25% off for a limited time at $149 (regular price $199).

More information:
https://max1musaudio.com/

Sign up for our forthcoming free plugin, D1rtBass:
https://max1musaudio.com/plugins/d1rtbass