MIDI ControllerOverreview

Native Instruments Komplete Kontrol S88 Mk3

The first hammer-action controller with polyphonic aftertouch, and the deepest software integration money can buy — wrapped around a bare control surface and a USB-C connection that is either flawless or maddening.

11 sourcesUpdated
$1,299Typical US price

Score aggregates reviewer opinions across topics.

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Native Instruments Komplete Kontrol S88 Mk3

The short version

What to know.

An 88-key, fully weighted hammer-action MIDI controller, around $1,299, built around the deepest software integration in the class: NKS 2, a direct connection into Kontakt, a large glass screen, eight touch-sensitive encoders, full-size MIDI DIN in and out, four assignable pedal inputs and MIDI 2.0. Sources agree almost without exception that the integration is exceptional, the software bundle is generous and the build is premium, and that at 13.5 kg it is unusually manageable for a hammer-action 88. They split three ways elsewhere: on whether the TP100 action satisfies players coming from real pianos, on whether stripping the surface down to eight knobs was the right call, and — most sharply — on whether the USB-C connection is dependable, which turns out to depend on the computer it is plugged into rather than the keyboard.

About this product

The 88-key, fully-weighted model. NI dropped 'Komplete' from the MK3 hardware name — it's marketed simply as 'Kontrol S88' — though retailers still list it as 'Komplete Kontrol S88 MK3'. It is the only size in the range with a hammer action: the S49 and S61 Mk3 share a semi-weighted Fatar TP90 bed, while the S88 gets the hammer-action TP100. Everything above the keys — screen, encoders, 4D encoder, wheels, I/O — is identical across all three. Not the older S88 MK1/MK2.

Native Instruments' Kontrol S88 Mk3 is the flagship of the company's third-generation 'smart keyboard' line, launched in October 2023. It is the only one of the three sizes with a fully weighted, hammer-action keybed — a Fatar TP100 developed with NI over six years — and the first widely available hammer-action controller of any kind to add polyphonic aftertouch, sensed by a force-sensitive resistor matrix under the keys. Above them sit a 1280×480 glass colour screen, eight touch-sensitive encoders, a 4D push encoder, RGB-lit pitch and mod wheels, an assignable touch strip and NI's Light Guide.

The pitch is a keyboard that puts Kontakt and the whole Komplete/NKS world under your hands, so you can browse, play and tweak without looking at the computer. That part is close to universally admired. The arguments gather elsewhere: around a surface with no faders and no pads, around whether a $1,299 controller's action really stands next to a stage piano, and around a launch in which firmware updates and USB-C connections failed often enough that Native Instruments eventually emailed buyers a workaround.

A good fit for

  • Composers and producers who live in Kontakt, Komplete and NKS instruments and want to browse and play them without the computer
  • Players who want a weighted hammer action and polyphonic aftertouch in the same instrument — currently the only place to get both
  • Anyone who wants a full 88 as the hub of a computer-based studio, with room on top for their own fader box or tablet
  • Users of a well-supported DAW who want on-hardware transport, mixer and track control

Think twice if

  • Your priority is piano feel above all — a dedicated piano controller or a stage piano with MIDI out will satisfy that better
  • You want hands-on faders or drum pads on the keyboard itself; there are none, and you will be adding a second box
  • Your instruments are mostly non-NKS and you would rather not route them through Komplete Kontrol
  • You rely on Maschine hardware integration — it was removed on the MK3
  • Your computer is one of the 2020–2023 machines with the known USB-C fault and you do not want to work around it
  • You are price-sensitive: this is a $1,299 controller with no faders and no pads

The reviewer consensus

Agreement &
disagreement.

3 / 8topics divide opinion
integrationsoftwareportabilitybuildvaluekeybedcontrolsconnectivity
2 Strong agreement3 Mostly agree3 Divided opinions

Common ground6

  • NKS 2 integration and the direct connection into Kontakt are the deepest in the class — browse, auto-map, layer and tweak instruments from the hardware without touching the mouse
  • Polyphonic aftertouch on a fully weighted hammer keybed is genuinely a first, and reviewers rate it a real expressive gain rather than a spec-sheet line
  • A large, crisp 1280×480 glass colour screen driven by an onboard CPU, so the response is immediate and readable under stage lighting

Points of contention6

  • The USB-C connection divides owners more sharply than anything else: most never think about it, a minority hit failed firmware updates and dropped connections — the cause sits in certain host computers built 2020 to late 2023, not the keyboard
  • The keybed splits by where you are coming from: exceptional next to synth-action controllers, short of a stage piano on repetition speed and realism
  • The stripped-back surface is either well judged or a real loss — there are no faders, no pads and about ten fewer buttons than the MK2

A closer look.

8 topics · 3 divided
Left: criticalRight: positiveTighter lines: more agreement

Keybed

Leans positiveDivided opinions
Reviewer sentiment5 supporting sources
CriticalNeutralPositive

Band: opinion spread · Dot: weighted average

Sources split, and the split tracks where the player is coming from: reviewers and owners arriving from synth-action or semi-weighted controllers call the TP100 exceptional and its polyphonic aftertouch unique, while players arriving from stage pianos say the repetition speed and realism sit below a dedicated piano controller. Both camps describe the same action.

Measured

A Fatar TP100 hammer action with a force-sensitive-resistor matrix for polyphonic aftertouch. Native Instruments' own forum team states the S88 MK3 is the only TP100-plus-poly-aftertouch combination in Fatar's line-up and the first widely available hammer-action controller to offer it.

vs. listeners — Nothing in the spec claims piano-grade repetition — the TP100 is a controller action, not the graded-hammer bed of a stage piano, which is exactly the gap the pianist camp is describing.

Where it splits
an exceptional, expressive controller action — and the only hammer bed with poly aftertouch73%

“the weight and expression of the keybed are extremely impressive and should please those keyboard players who have had some classical training”

Atheen Spencer, Sound On Sound
good, but not a real piano action — slower repetition, and pianists have better options27%

“You can probably feel it most precisely in the ability to quickly repeat the same tone, and in that MK3 is slower and lags behind this competition.”

Leo, VI-Control
Link to this topic

The hardware

Specifications.

Checked

Playing surface

Keys
88, hammer actionpoly aftertouch
Encoders
8 endless
Pitch / mod
Wheels
Display
Colour screen
MPE
Yes

Workflow

DAW integration
Ableton Live, Bitwig Studio, Cubase, Digital Performer, FL Studio, Logic Pro, Pro Tools, Studio One

Connection

USB
USB-C
MIDI
DIN in, DIN out
Pedal inputs
Sustain, Expression
Power
USB bus power

Physical

Weight
13,500 g
Dimensions
1,353 × 347 × 120 mm

Manufacturer-published figures, not measurements · from native-instruments.com.

Follow the evidence

Sources 11

1–6 of 11 sources

Read with context

Limitations & method.

As of

What to keep in mind 7

  1. A read of where the reviews land as of August 2026, nearly three years after launch — firmware has moved a long way since the first units shipped, and older reviews describe a rougher keyboard than the one you would buy today.

  2. Only one of the published reviews was written about the 88-key model specifically; the rest cover the S-Series MK3 as a range, so the shared parts are better evidenced than the hammer action itself.

Where to buy Product & retailer links

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