SKU: 52698504650

AIR OPx-4

Sale price$30.60 Regular price$34.00
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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15

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Description

AIR OPx-4Video of Hello Operator, Get me OPX 4! OPx 4 gives you deep, compelling FM synthesis that is easy to dial in. OPx 4 is a groundbreaking four operator FM synthesizer with advanced sound editing and an easy to understand control layout. In addition, the system has one of the most profound FM engines ever built with a 4x4 FM matrix that includes tone shaping and filtering and a 32 slot matrix for modulating your FM tones. A Groundbreaking FM Synth Engine

OPx-4 gives you deep, compelling FM synthesis that is easy to dial in.

OPx-4 is a groundbreaking four operator FM synthesizer with advanced sound editing and an easy-to-understand control layout. In addition, the system has one of the most profound FM engines ever built with a 4x4 FM matrix that includes tone shaping and filtering and a 32-slot matrix for modulating your FM tones.

A Groundbreaking FM Synth Engine

With its flexible wave shaping, dual-mode filter path with 23 different filter types, six envelopes with tempo-synced looping, two LFOs, and two ramps, the OPx-4 will become your go-to FM synth. It includes three insert FX and two global FX for use with 27 included AIR effect plugins, such as reverb, delay, distortion, modulation effects, and more.

Leave Your Sound Design Ph.D. at the Door. OPx-4 Makes FM Synthesis Easy.

FM synthesis works by taking classic oscillator waveforms and modulating them until they sound like something brand new. If you-ve ever experimented with FM synthesis, you know it can be complicated to understand how to make great sounds. OPx-4-s simple layout and easy controls make it a breeze to experiment with FM functions without needing a deep understanding of how it works behind the scenes. An easy-to-understand control scheme makes experimenting as easy as turning knobs until it sounds great!

Four Operators, Two Filters, Thirty-Two Mod Sources, ONE Great Sound

Using four FM operators and an FM operator matrix, you can craft almost any FM sound you-ve ever heard-or even those you haven-t heard of yet! You can adjust the values of each operator using specific on-screen controls for pulse width, formant, FM filtering, and FM shaping, as well as specific ADSR and FM oscillator envelope controls.

Built-In Effects Engine to Stylize your sounds

OPx-4 includes multiple effects like EQ, amp sims, reverb, delay, and modulation. Create brilliant shimmers, dark haunting echoes, or spacey washed-out DX-style electric pianos with a cutting-edge effects engine built right into the instrument.

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 52698504650

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Corrie King
Carnegie, US
★★★★★ 5
They get it done
Style: 100ct
They get it done. Don’t sting eyes.
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Reviewed in the United States on April 8, 2026
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Niki M
San Leandro, US
★★★★★ 1
NOT EFFECTIVE
Style: 100ct
I wish I could give this product ZERO stars but I had to click something in order to submit this review. DO NOT PURCHASE if you want effective eye makeup removed. It is literally water on some eye pads.
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Reviewed in the United States on May 28, 2026
M
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marcia ceciliot
Draper, US
★★★★★ 5
Gentle
Style: 100ct
Best eye maker remover I have ever tried. It is gentle and easy to use. The container is sturdy and comes with a tool to grab each wipe.
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Reviewed in the United States on March 20, 2026
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Amazon Customer
Natrona Heights, US
★★★★★ 5
Doesn’t burn your face it’s gentle
Style: 100ct
Excellent product
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Reviewed in the United States on March 28, 2026
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Verified Purchase
Mitch
Pawtucket, US
★★★★★ 5
Our German Sheppard loves these
Size: Medium
These cost a bit more than tennis balls, but they are so much nicer and longer lasting. For starters, they stay cleaner than tennis balls because they’re smooth rubber. Dirt won’t build up on them and if anything does stick, like grass or soil, it falls off once the dog slobber dries. They’re also thick, so they don’t fall apart or blow out like a normal tennis ball does in our dog’s jaws after 30 seconds. Our GS chomps on these like crazy and the only damage they’ve suffered is a crack that developed from the edge of the hole, but the crack is growing very slowly and none of these balls have totally failed yet. The balls do whistle when thrown ant high speed and that may help a dog track and locate it, but I’m not sure. Our neighbors hear the whistling too so it’s far from silent. Lastly the orange ball is easy to locate out in our yard, but the dark blue practically disappears.
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Reviewed in the United States on April 6, 2025

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