Korg M3chat_bubble_outlineFrom real comments

The keybed and overall playing feel are frequently called the best owners have used. Multiple long-term owners describe the M3's keybed, both 61-key and 88-key versions, as superior to nearly anything else they've played, including modern MIDI controllers and Korg's own later flagships. One commenter kept the board specifically because no 2025 controller felt as good. This tactile quality, combined with the vibey vintage tone, keeps many owners repurchasing the M3 even after selling it.

KARMA, the sequencer, and sound design depth are standout strengths. Owners praise KARMA as a genius generative tool, alongside piano roll editing, cue lists, chord pads, and a drum machine with thousands of editable samples and patterns. Several say these sequencer features were removed from later Kronos and Nautilus models, making the 15+ year old M3 still more capable in this area. The sound is called vintage, vibey, and highly customizable despite being technically lower-resolution than newer boards.

The touchscreen is a near-universal, often synth-ending failure point. Countless owners report the resistive touchscreen degrading, freezing, drifting, or dying entirely within 2-3 years, sometimes repeatedly, since it controls most functions. Fixes range from recalibration and cleaning to full panel replacement or ribbon-cable trimming, with mixed success; some report unfixable drift even after new screens. A few also mention yellowing plastic and a fragile motherboard as separate long-term durability concerns.