Korg opsix SE – 61-Key Altered FM Synthesizer with Aftertouch

The Korg opsix SE brings expressive FM synthesis into a premium performance format. Featuring a 61-key natural-touch keyboard with velocity, release velocity, and aftertouch, an all-metal build, and 80-voice polyphony, it’s built for players who demand depth, flexibility, and sonic clarity.

Key Features

• Altered FM sound engine: Six operators with six modes—including FM, Ring Mod, Filter FM, Wave Folder, and Effect—for rich and innovative tonal possibilities
• Massive polyphony: Up to 80 simultaneous voices for dense, layered patches
• Extensive modulation architecture: Includes 11 filter types, three envelopes, three LFOs, 12 virtual patch routings, motion sequencer, and arpeggiator
• Deep effects suite: Three effect slots with 30 types ranging from delay and reverb to shimmer and distortion
• Smart sound storage: 500 programs (350 factory, 150 user) plus 64 favorites for quick recall

Customer Benefits

The opsix SE transforms FM from a niche engine into a highly playable, creative instrument. Its responsive keyboard, intuitive control layout with OLED feedback, and hands-on workflow make sound design a fast, inspiring process—perfect for both studio and stage.

Quick Specs

• Dimensions: 101.4 × 34.4 × 10.8 cm
• Weight: 8.6 kg
• Keyboard: 61 natural-touch keys with velocity, release velocity, and aftertouch
• Polyphony: Up to 80 voices
• Programs: 500 total (350 presets, 150 user)
• Voice engine: Altered FM with 6 operators and multiple modes
• Modulation: 11 filters, 3 envelopes, 3 LFOs, 12 virtual patches
• Effects: 3 effect slots with 30 types
• Sequencer & Arp: 16-step motion sequencer, arpeggiator with 7 patterns
• Connectivity: USB-B, MIDI In/Out, stereo outputs, headphone jack, sustain pedal input
• Included: AC adapter, hard case

What’s in the Box

• Korg opsix SE synthesizer
• AC power adapter
• Hard protective case
• User manual

Use Cases / Ideal For

Whether you're a sound designer, live performer, or electronic composer, the opsix SE delivers rich FM textures and real-time playability. Ideal for crafting evolving patches and expressive performances, in both studio and stage environments.

Compatibility

Seamlessly integrates with opsix Native software via USB. Fully compatible with MIDI workflows and DAWs, and ships with Korg’s Sound Librarian software for easy patch management.

Pros & Cons

✅ Pros:

• Expressive hardware with full aftertouch keyboard
• Deep FM-based synthesis in a tactile, intuitive layout
• Massive polyphony for lush textures
• Compact metal build with included case for durability

⚠️ Cons:

• Large form factor and weight—may not suit ultra-compact setups
• Steeper learning curve for FM beginner users

The Korg opsix SE offers deep sound design, expressive control, and a premium form factor designed to unleash creativity.