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OPx-4
OPx-4

OPx-4

by AIR Music Technology

Four-operator FM synth from partner AIR Music Technology

$34.00 $149.00 You save $115

Download: available immediately

FM synthesizer

  • Build electric pianos, bells, basses, and evolving textures with four FM operators and a 4x4 FM matrix
  • Shape every sound with 23 filter types, six tempo-synced looping envelopes, two LFOs, and a 32-slot modulation matrix
  • Add three insert and two global effects from 27 AIR effects, including reverb, delay, and distortion
OPx-4 audio demos

FM synthesis without the steep learning curve.

FM synthesis makes new sounds by letting oscillators modulate each other, but it has a reputation for being hard to program. OPx-4 keeps the controls clear, so you can turn a knob, hear what changes, and keep going until it sounds right. Each of the four operators has dedicated controls for pulse width, formant, FM filtering, and FM shaping, plus its own envelope. When you want more, the 4x4 FM matrix, dual-mode filter path, and 32-slot modulation matrix give you room to build complex, moving sounds. Start with presets from the AIR sound design team. Your purchase also unlocks OPx-4 in MPC and Force standalone at no extra cost.

OPx-4 at a glance

Product type: Plugin
For use with: Compatible DAWs supporting VST2, VST3, Audio Units, or AAX, MPC software 2.11 or higher, and MPC / Force standalone
Download size: 197 MB (Windows), 406 MB (macOS)

AIR Music Technology

Based in Germany, AIR Music Technology started as Wizoo Sound Design, one of the earliest pioneers in virtual instrument technology. Their mission is to create the world’s most innovative virtual instruments, music software, and effects. AIR is a member of the family of brands known as inMusic.

System Requirements

Operating systems & compatible hardware

Operating systems

  • macOS 12, 13, 14, or 15 (Intel and Apple silicon)
  • Windows 10 or 11

Hardware

  • Dual-core 2.5 GHz CPU or higher
  • 4 GB RAM (8 GB recommended)
  • Internet connection required for authorization

MPC / Force standalone (MPC version 2.11 or higher, Force version 3.2 or higher)

  • MPC One, MPC One+, MPC Live, MPC Live II, MPC Live III, MPC X, MPC X SE, MPC Key 61, MPC Key 37, and Force

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