Korg opsix mk II

The opsix mk II is an enthusiast-tier digital synth that puts hands-on 6-operator Altered FM synthesis behind physical sliders, with 64-voice polyphony for deep, fast sound design. Its 37 keys make it a strong creative tool for producers chasing complex digital timbres, but analog-warmth purists and anyone who needs full-size keys should look elsewhere.
Scores
BreakdownHideOverall71±3Caliber-forward blend — tier caliber + within-tier price rank 30%, value 25%, confidence 20%, compatibility 15%, upgrade path 10% — renormalized over applicable dimensions; excluded here: compatibility (no ecosystem dimension).
Scores
BreakdownHideCaliber-forward blend — tier caliber + within-tier price rank 30%, value 25%, confidence 20%, compatibility 15%, upgrade path 10% — renormalized over applicable dimensions; excluded here: compatibility (no ecosystem dimension).
The ± band on the overall score reflects sourcing confidence — wider when fewer specs are verified.
How each score is computed: our scoring methodology.
Specifications
| Spec | Value | Verification |
|---|---|---|
| synthesis | digitalSourced | Sourced |
| voices | 64Sourced | Sourced |
| keys | 37Sourced | Sourced |
3/3 detail specs sourced. Amber rows are flagged for verification — we show them as reported, not confirmed.
Verdict
Best for
- Hands-on 6-operator Altered FM synthesis with sliders for fast, deep digital sound design
Who should skip this
- Analog-warmth purists; players wanting full-size keys
Where to buy
List price $999
Prices are a guide and can change — confirm the current price on the retailer's site before buying.
Prices last checked Jul 15, 2026 — retailer prices change often, so click through for the current price.
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Compatibility
No platform-specific compatibility requirements — this works in any standard music production setup.
Upgrade path
Outgrow it and the Roland Juno-X is the natural next step up in synths. See it →