Air Music Technology OPx-4

$34.00 to $149.00 Price Tier: Budget

All time low price

0 wishlisted

0 saved

Page last updated Jul 04, 2026

Pricing and availability

We compare 600+ stores and found this item at 3 stores. Prices updated June 22, 2026.

Store

Reviews

Price

$34.00

View Deal

$34.00

View Deal

$149.00

View Deal

Average Price: $72

Budget/Beginner

$79

$200+

Price Tier

In the Synth Plugins category, AIR Music Technology OPx-4 is priced in the Budget/Beginner range. This is great gear to get started with or for creators on a budget.

Budget

Standard

High-end

Price History

Based on price data from 2 merchants for "AIR Music Technology OPx-4". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

^* Product prices and availability are updated by Equipboard every 24hrs and are subject to change. Equipboard may receive compensation for purchases made at participating retailers linked on this site. This compensation does not affect what products or prices are displayed, or the order of prices listed. For more information, please refer to our affiliate disclosure.

Description

Edit description

Unleash the power of FM synthesis with the AIR Music Technology OPx-4, a revolutionary plugin that brings out the best in digital sound design with its intuitive layout and advanced capabilities. Whether you're a seasoned sound designer or just starting to explore the world of FM synthesis, the OPx-4 provides a playground of sonic possibilities with its four-operator FM engine and comprehensive modulation matrix.

Dive into the deep end with a 4x4 FM matrix and create sounds that range from subtle nuances to aggressive, groundbreaking tones. Its dual-mode filter path offers 23 distinct filter types, allowing you to sculpt and refine your sounds with precision. The inclusion of six envelopes, two LFOs, and two ramps lets you shape the dynamics of your music effortlessly, while a powerful effects engine adds layers of professional polish with built-in reverb, delay, distortion, and more.

Designed with an easy-to-navigate interface, the OPx-4 simplifies the complexities of FM synthesis, making it accessible to musicians of all levels. Assignable macro knobs and multiple preset banks ensure that inspiration is never out of reach, letting you create anything from classic 80s FM synth sounds to entirely new digital landscapes.

Whether you're looking to enhance your music production or explore new soundscapes, the OPx-4 delivers unmatched versatility and creativity in a streamlined package.

Key Features:

Four-operator FM synth engine with wave looping and multiple filters
32-slot FM modulation matrix for expansive sound design
Dual-mode filter path with 23 filter types
Six envelopes with tempo-synced looping, two LFOs, and two ramps
Built-in effects including EQ, reverb, delay, and modulation
Compatible with VST, AU, AAX, and standalone formats
Supports both PC and Mac systems, including Apple Silicon compatibility

Owner's manual

AIR Music Technology OPx-4 User Manual

Videos

Add video

Hurricane

AIR- OPx-4

Hurricane

OPx-4 Sound Design - Beginner Tutorial

Joe Filbrun

OPx-4 Sound Design - Operators and FM Basics

Joe Filbrun

Air OPX-4 FM Synth - No Talking

Elektronick Musick

OPx-4 - How to Tweak Presets

Joe Filbrun

Reviews

Add review

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about AIR Music Technology OPx-4.

Features and functionality

0 0

The OPx-4 lacks a manual, and its interface is overwhelming due to numerous screens and menus, making it challenging for some users to navigate.
Source
0 0

The modulation matrix has errors with unipolar and bipolar modes, leading to unexpected results, and strange labelings could confuse users during sound design.
Source
0 0

The synth includes a unique sample attack layer and FM matrix, producing superior 4-operator FM sounds compared to hardware like the TX81Z.
Source

Comparisons

0 0

Compared to other FM synths, the OPx-4 is mentioned as the most powerful synth on MPC devices, particularly valued by FM enthusiasts.
Source
0 0

The OPx-4 can function as a modular environment, offering extensive sound design capabilities that may replace other plugins entirely.
Source
0 0

While considered powerful, the OPx-4 is contrasted with simpler FM synths like Dexed, which may be better suited for beginners due to fewer operators.
Source

Software and compatibility

0 0

The OPx-4 requires an internet connection for plugin activation on MPC hardware, with Ethernet needed for MPC One and Wi-Fi available on other models.
Source
0 0

Both OPx-4 and Jura have demo versions available, allowing users to test and decide which fits their workflow before purchase.
Source

User experience

0 0

Some users find the OPx-4's user interface difficult to use for fine-tuning FM sounds, as small mouse movements result in large value changes.
Source
0 0

Some users experience aliasing and digital artifacts with the OPx-4, but it remains a favored tool due to its overall capabilities.
Source
0 0

Users find the preset browsing and knob tweaking engaging, with sessions that can last hours due to the synth's immersive sound capabilities.
Source

Use cases and applications

0 0

Users note that the OPx-4 is suitable for creating custom patches on MPC hardware, with no significant CPU strain reported when running two or three instances.
Source
0 0

OPx-4 is noted for its potential in creating original sounds for psytrance, given its deep FM synthesis architecture.
Source

Value and pricing

0 0

The OPx-4 was considered a good deal at £39 during a sale, suggesting buyers should wait for discounts for better value.
Source
0 0

The plugin is often discounted significantly, with users recommending waiting for sales to purchase at a more reasonable price, sometimes as low as 20 euros.
Source