Waves UM225 / UM226


Convert Stereo Music, Videos and Films to Surround

With surround and immersive becoming increasingly important, upmixing from legacy stereo audio to these formats is essential. The UM225/UM226 plugins convert stereo audio to 5.0 or 5.1 surround simply and effectively—whether upmixing an entire film or TV show, or just the music.

The UM upmixers cover your conversion needs with 8 modes to spread various types of program material intelligently to L/R and L/R surround speakers, and surround-stage fine-tuning controls.

  • Two upmixing components: UM225 for 5.0, and UM226 for 5.1
  • 8 modes spread sound intelligently to L/R and L/R surround speakers
  • Ambience controls create smaller or larger surround stages
  • Punch controls spread transients optimally between L/R and center
  • UM226 LoAir adds octave-lower harmonic for “rumble” and FX
  • UM226 includes 4th-order, low frequency filter for LFE speaker
  • Intuitively displays the spread of energy in the surround field
  • Output trims for L/R, Center, L/R surround, and (UM-226) LFE stages
  • For stereo-only remixing, widen the image, control lows and punch
  • Upmix global control for balancing the stereo/surround mixes
What Top Pros Are Saying
Richard Chycki
  • “UM225 and UM226 are fantastic for interpreting stereo spreads into surround. They were my go-to’s when remixing Rush’s albums from stereo to surround – the UM225 to upmix stereo pads and synths in order to get some spread throughout the entire field, the UM226 to get some extra sub action. “
    Richard Chycki
    Guitarist, Engineer
    Dream Theater, Aerosmith, Rush
  • Frank Ilfman
    “UM225 is great for translating any stereo-recorded instrument into the 5.1 realm. “
    Frank Ilfman
    Film Composer, Musician, Producer, Remixer
    Ghost StoriesThe Etruscan SmileBig Bad Wolves, KT Tunstall
Category: Brand:



  • Version: macOS Catalina 10.15, Big Sur 11, Monterey 12, Ventura 13, Sonoma 14
  • CPU: Intel or Silicon Architecture
  • RAM: 8
  • Disk: 16

  • Version: Windows 10 64 bit Windows 11
  • CPU: X64 compatible Intel or AMD CPU
  • RAM: 8
  • Disk: 16