Store & Service Updates - All stores closed for In-Store shopping but remain open for Click & Collect only - Find Out More

Korg Opsix Altered FM Synthesizer

Korg Opsix Altered FM Synthesizer



Order before 3pm Mon-Fri for Next Day Delivery

The Korg Opsix Altered FM Synthesizer hits the scene with a whole new take on FM synthesis.

Rethink Everything You Know About FM Synthesis

A new and expansive reimagining of classic digital synthesis, the Korg Opsix gives you a new take on FM synthesis.

The Korg Opsiz is an "altered" six-operator FM synthesizers with highly accessible features and an amazingly flexible sound engine to give you results far beyond traditional FM synths.

Whether you're new to synths or a seasoned synth artist, the Korg Opsix will give you something new, exciting and powerful.

Korg Opsix Altered FM Synthesizer Key Features:

  • True six-operator FM synthesis, and more
  • FM exploration, easier than ever
  • Full editing with the DATA ENTRY rotary encoders
  • Five operator modes that expand FM synthesis
  • 40 preset algorithms and user algorithms
  • Three EGs, three LFOs and 12 virtual patches offer an extensive range of modulation.
  • Eleven powerful filters, including MS-20 and Polysix.
  • Up to three simultaneous high-definition effects, 30 types
  • Visually-satisfying editing with a spectrum analyzer and oscilloscope.
  • Powerful 16-step polyphonic sequencer
  • Add unpredictability to sounds with the Randomize feature
  • Favorite and smooth sound transition (SST) functions.
  • Compact design featuring a 37-key keyboard

Altered Six-Operator FM Synthesis

While the Korg Opsix features a traditional six-operator FM sound structure, it gives you sounds that are completely reimagined rather than simply reprocued.

A diverse range of waveforms and operator modes and a filter give you incredible FM sound and subtractive synthesis.

One of the greatest elemts of the Korg Opsix is that it takes away the complexities of FM so you can enjoy performing with one of the deepest forms of digital synthesis.

16-Step Polyphonic Sequencers

The Korg Opsix has 16 buttons on the bottom right of its panel glowing green for that old-school FM synth appearance.

This is your multi-purpose 16-step polyphonic sequencer which allows you to record up to six notes per step while editing the velocity, game time and playback timing of each note.

You can also use it to create long phrases, make subtles shifts in timing to get a more lifelike sound and more, all things that you can't do with your typical 16-step sequencer.

There's also a motion sensor on the Korg Opsix which allws you to record up to six parameters to smooth sound changes within phrases and building up rhythms.

Free Software Bundle

Along with this powerful altered FM synthesizer, when you buy the Korg Opsix you also get a diverse range of music software.

This free software bundle includes Ozone Elements which allows you to creat esongs and master them using AI, Skoove to help you improve your key playing skills and Reason Lite; a streamlined DAW for creating and producing music.

You also get a range of software synths from KORG and other brands for making some excellent sounds on your computer.

Buy the Korg Opsix Altered FM Synthesizer from PMT Online for an evolved form of FM synthesis which gives you amazing control over your sound without the complexity of traditional synths.

Korg Opsix Altered FM Synthesizer Specs:

  • Keyboard: 37 keys (velocity and release-velocity sensitive)
  • Maximum Polyphony:
  • 32 voices (or a max. of 24 voices, depending on the settings)
  • Sound generating system:
  • Altered FM sound generator

6 operators, 1 filter, 3 EGs, 3 LFOs, 3 effects, step sequencer, arpeggiator
40 presets + user algorithm (unique to each program)
5 modes (FM, Ring Mod., Filter, Filter FM, Wave Folder)
Oscillator waveform:
21 waveforms (Sine, Sine 12bit, Sine 8bit, Triangle, Saw, Saw HD, Square, Square HD, Additive Saw3, Additive Sqr3, Additive Tri3, Additive 12345, Additive 1+2, Additive 1+3, Additive 1+4, Additive 1+5, Additive 1+6, Additive 1+7, Additive 1+8, Noise S/H, Noise White)
11 types (LPF 12, LPF 24, LPF MS-20, LPF POLY6, HPF 12, HPF 24, HPF MS-20, BPF 6, BPF 12, BRF 6, BRF 12) EG:
23 waveforms (Triangle, Saw Down, Saw Up, Square, Sine, Sample&Hold, Guitar, Exp. Triangle, Exp. Saw Down, Exp. Saw Up, Step4 Triangle, Step6 Triangle, Step4 Saw Down, Step6 Saw Down, StepRnd:Time, StepRnd:Lvl&Time, StepRnd:Level, Random:Time, Random:Lvl&Time, Triangle + , Saw Down + , Saw Up + , Square +)
12 routings Effect:
30 types (Chorus, Unison Ensemble, Phaser, Phaser (BPM) , Auto Pan, Auto Pan (BPM), Flanger, Flanger (BPM) , Rotary Speaker, Auto Wah, Exciter, Enhancer, LFO Filter, 3-Band EQ, Distortion, Guitar Amp, Decimator, Grain Shifter, Master Limiter, Compressor, Delay, Delay (BPM) , Autopan Dly, Autopan Dly (BPM), Tape Echo, Tape Echo (BPM) , Early Reflection, Reverb, Shimmer Reverb, Spring Reverb)
Step Sequencer (up to 16 steps, up to 6 notes per step) , Motion Sequencer (up to 6 lanes) Arpeggiator:
7 patterns (MANUAL, UP, DOWN, ALT1, ALT2, RANDOM, TRIGGER) fault)

Number of programs:
500 (250 preset programs and 250 user programs as the factory-set de
64 (16 Slots × 4 Banks)

MODULATION wheel, PITCH wheel, RATIO OP 1–6 knobs, LEVEL OP 1–6 sliders, DATA ENTRY A–F knobs

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 supply:
AC adapter (DC12V)

Power consumption:
5 W

Dimensions (W × D × H):
565 × 338 × 90 mm / 22.24" × 13.31" × 3.54"

2.9 kg / 6.93 lbs.

Included items:
AC adapter, Precautions, Quick Start Guide

Accessories (sold separately):
DS-1H damper pedal, PS-1 pedal switch, PS-3 pedal switch

More Information
Manufacturer Korg
SKU 315196
Shipping Weight (kg) 5.000000
Number of Keys 37 keys
Key Action Non-Weighted


We know you want to get your gear as quickly and as safely as possible, Next Working Day Delivery to UK Mainland Addresses, on all IN STOCK items, if ordered before 3pm. This will include a text or email on the day of delivery giving you an exact hour window of when your gear will be with you.

  • Orders under £99: £4.99 Delivery Charge
  • Orders over £99: Free Next Day DPD Delivery (When Ordered before 3pm)
  • Weekend Delivery (Saturday-Sunday): £9.99 (When Ordered before 3pm Friday)
  • Heavy Items (over 40kg): £39.99 Pallet Service







Rather not wait in for the delivery? Don’t worry, we’ve got you…In Stock items can be ordered and paid for in-advance Online via our Click & Collect service. As long as if it's in stock at your chosen branch, you can collect the item within 2 hours*.



If you have bought something In-Store or Online and want to return it as unwanted, you have 30 days from when you receive the goods to contact our PMT experts either by phone or email to return your item.

We can offer you a refund if you return your item within 30 Days from purchase date and with 100% perfect packaging. 


Please Note - We cannot accept unwanted returns on microphones, any in-ear earphones or monitors, and any other items that touch your mouth, nose or inner ear if you have removed the hygienic packaging.