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Your cart is empty.5.0 out of 5 stars
- #89,692 in Musical Instruments (See Top 100 in Musical Instruments)
- #272 in Synthesizer & Workstation Keyboards
Product Description

A Full-Spectrum Sound Experience
opsix mk II is a digital synth like no other. Based on the sound engine of the original opsix, the number of simultaneous voices and voicings has been expanded to an astounding 64 voices. The result is superior performance and precise control. The opsix Operator Mixer simplified FM synthesis for the first time, making it not just comprehensible but also controllable. With the addition of extra synthesis capabilities and programming, it offered a more efficient workflow and an even richer sound.

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Get Illuminated with the Operator Mixer
At the heart of every sound is opsix mk II’s Operator Mixer – a simple set of six faders and knobs that invite exploration. Each part lights up red to indicate carriers or blue for modulators.
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Direct Hands-On Control
Select from a full range of analog-style filters. There’s even a built-in spectrum analyzer and oscilloscope that gives you visual feedback via the screen on the music you’re making.
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Altered Reality
What started as a legacy synthesis has evolved into something completely different. opsix mk II is FM-based, but the similarities to the classic synthesis end there.
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Powerful Effects Processing
opsix mk II provides three blocks of 30 types of high-definition effects that you can use together to enhance your sounds even further.
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Polyphonic Motion Sequencing
opsix mk II features an incredible step sequencer that rivals groove boxes for flexibility and power. Press the PLAY button on any sound and experience the complexity of the sequences!
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Throw the Dice
Press the button marked with the die icon to completely scramble the synth’s parameters, generating a new, unique sound.
Monster Modulation Matrix
The opsix mk II ’s modulation possibilities are genuinely mind-blowing. With six operator modes and 40 preset algorithms, plus the ability to create your own, opsix mk II offers you dynamic sonic options. This synthesis is supercharged with the processors that come at the end of the signal chain. The MOD section works separate from the operators, with three EGs and three LFOs; and 12 virtual patches for a wide variety of routing possibilities.


Six in One Synthesis
Since waveforms can be arranged and modulated in nearly infinite ways, opsix mk II can easily do the sonic work that is similar to numerous types of synthesis: Additave, Subtractive, Semi-Modular, Analog (Modeling), Waveshaping, and Classic FM.

Free Librarian Software
The Opsix Sound Librarian lets you view and organize data on an Opsix MK II connected to a computer via USB, and transfer sound data back and forth between the Opsix MK II and the computer.
Technical Specifications
Keyboard | 37 keys (velocity and release-velocity sensitive) |
Maximum Polyphony | 64 voices (varies depending on the setting) |
Structure | 6 operators, 1 filter, 3 EGs, 3 LFOs, 3 effects, step sequencer, arpeggiator |
Controllers | MODULATION wheel, PITCH wheel, RATIO OP 1–6 knobs, LEVEL OP 1–6 sliders, DATA ENTRY A–F knobs |
Inputs/outputs | Headphone (6.3 mm stereo phone jack), OUTPUT L/MONO and R (impedance-balanced 6.3 mm TRS phone jacks), DAMPER (6.3 mm phone jack, half-damper not supported), MIDI IN and OUT connectors, USB B port |
Power consumption | 5W |
Dimensions (W × D × H) | 22.24" × 13.31" × 3.54" |
Weight | 6.93lb |
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