MIDI ControllerOverreview

Roger Linn Design LinnStrument 128

Not a keyboard, not a pad grid — a 128-square playing surface that reads three dimensions of every finger, and asks you to learn an instrument to get at them.

13 sourcesUpdated
$1,149Typical US price

Score aggregates reviewer opinions across topics.

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Roger Linn Design LinnStrument 128

The short version

What to know.

A 128-pad expressive MIDI controller — a 16 × 8 grid of silicone squares, each sensing velocity, pressure and finger movement on both axes, laid out like a string instrument in fourths so a chord shape is the same shape in every key. Sources agree on the fundamentals. The build is exceptional and unusually repairable: an aluminium and steel chassis with cherry-wood sides, and a maker who ships you the part and a video rather than asking for the unit back. Everything is configured from the front panel — no editor app, no drivers, four saved presets, plus splits, CC faders, an arpeggiator and a step sequencer — and the operating system is open source and still being updated. It carries full-size 5-pin MIDI in and out, a footswitch jack and USB that will run it from a phone. Three things genuinely divide reviewers. The playing surface barely moves: one camp finds pressure and pitch tracking more consistent than any moving key, the other finds velocity less accurate than a good drum pad and hard to place without looking — and Roger Linn's own documentation says both are true of how the sensor works. Whether the software around it is still an obstacle depends on when the reviewer wrote: the 2016–18 verdict was that MPE support was thin, while the controller's one-channel mode drives any synth and Ableton Live has had MPE since 2021. And owners disagree about the size — buyers of the 128 say the nine semitones they gave up are not missed, but Roger Linn reports the large model outsells it two to one. At $1,149 with no sound engine, it is a deliberate instrument purchase, and it asks for practice before it pays.

About this product

The smaller LinnStrument: 128 pads in a 16 × 8 grid, 51 semitones (just over four octaves), 399 mm wide and 1.81 kg. Not the large LinnStrument, which is 25 × 8 = 200 pads, 60 semitones, 570 mm and $1,599. Same sensor, same pad size, same open-source OS; the 128 additionally drops the DC power inlet, shows 8 sequencer steps at a time instead of 16, and ships in a neoprene sleeve rather than a padded zip case.

Roger Linn built the drum machine that defined the 1980s and the MPC that defined the decade after it. The LinnStrument is his answer to a different problem: that a MIDI keyboard reduces a note to an on switch with a number attached. Every one of its silicone squares senses strike velocity, sideways position, front-to-back position and pressure — independently, polyphonically — so vibrato, slides and swells come from the fingers already playing the note rather than from a wheel your other hand has to reach for.

The 128 is the smaller of the two models: sixteen columns instead of twenty-five, four octaves instead of five, backpack-sized, and $450 cheaper. It is otherwise the same instrument, made in small runs in California, sold direct, and still gaining firmware a decade after launch. It is also a controller with no sound of its own, no knobs, no faders and no screen, at a price where most rivals hand you a full studio — which is why the arguments about it are less about quality than about whether the trade is one you want to make.

A good fit for

  • Guitarists, bassists and other string players who want a note layout that transfers instead of one to relearn
  • Players chasing per-note vibrato, slides and swells on sustained sounds — modelled winds and strings, pads, leads
  • Anyone who wants gear they can service themselves and still be using in ten years
  • Travelling and small desks: backpack-sized, bus-powered, and happy running off an iPad or phone

Think twice if

  • You mainly finger-drum, or need drum-pad-grade velocity accuracy for percussive parts
  • You want a DAW control surface — there are no knobs, faders, screen or transport, and it will not launch clips
  • You want to be good at it this week; it is a new instrument and it expects practice
  • You want five octaves or roomy two-handed splits — that is the larger 200-pad model
  • The budget is the constraint: this is $1,149 before you own a single sound

The reviewer consensus

Agreement &
disagreement.

3 / 8topics divide opinion
buildcontrolssoftwareconnectivityvaluepadsintegrationportability
3 Strong agreement2 Mostly agree3 Divided opinions

Common ground6

  • Build and repairability are exceptional — metal chassis, cherry-wood sides, and a maker who posts you the part with a video instead of taking the unit away for weeks
  • Everything is set from the front panel: no editor app, no drivers, four saved presets, and an open-source OS still getting new features eleven years in
  • Pressure, pitch-bend and timbre tracking are smooth, repeatable and lag-free — the expressive control itself does what it claims

Points of contention3

  • The travel-free playing surface: superb for continuous pressure and pitch, but sources split on whether velocity accuracy and finding your place without looking are acceptable losses
  • Whether the MPE software around it is still an obstacle — the 2016–18 reviews say yes, while the one-channel mode and post-2021 DAW support say that gap has mostly closed
  • Whether the 128 is the right size or worth stretching to the 200 — its owners say the nine missing semitones do not matter, but the large model outsells it two to one

A closer look.

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

Pads

Leans positiveDivided opinions
Reviewer sentiment8 supporting sources
CriticalNeutralPositive

Band: opinion spread · Dot: weighted average

The whole product, and the one thing sources genuinely fight about. Each of the 128 squares is 17 mm across, separated by shallow troughs, under a 2 mm sheet of translucent silicone that compresses about a millimetre — so there is almost no travel. What that buys is remarkable: reviewers who measured the MIDI output describe pressure, pitch-bend and timbre curves that are smooth, repeatable and lag-free, and pitch quantisation that snaps a note in tune while still letting you wobble it. What it costs is velocity. The maker's own limitations page explains why — a pad infers a strike from a pressure envelope rather than timing a key between two contacts — and owners feel it: very light taps can go unregistered, and players trying to finger-drum report the surface guessing at how hard a hit was. A third party now sells an aftermarket 'speedbumpy' surface purely so you can find the rows without looking. Two real properties of one sensor, described by people who wanted different things from it.

Measured

Maker's spec and limitations list: 128 pads in a 16 × 8 grid, each sensing velocity, release velocity, X, Y and Z; Y travel is capped at the pad's 17 mm depth; about 50 simultaneous touches, or 15 in MPE mode (MIDI's 15 per-note channels); minimum 10 mm between two touches. Two hard sensing limits: no more than three pads in one column, and if three pads form three corners of a rectangle the fourth corner is ignored. The playing surface is 2 mm of 40-durometer silicone, chosen because thicker material spreads the force and reduces sensitivity to light touches, and because foam cannot be translucent for the LEDs beneath.

vs. listeners — The objective data supports both camps at once rather than settling them. Anderton's MIDI captures show pressure, CC74 and pitch-bend streams that are visibly consistent; the maker's own page says velocity is inherently less accurate here than on a weighted keybed or a dedicated drum pad, and names the engineering reason. The disagreement is really about which of those two facts your playing depends on.

Where it splits
continuous control is the best there is — the lack of travel is the design working54%

“I particularly like how the feel from no pressure to full pressure is linear and consistent.”

Craig Anderton · Harmony Central
a scanned, travel-free surface costs velocity accuracy and needs your eyes46%

“Velocity accuracy and consistency, while very good on LinnStrument, is inherently less accurate than a high-quality MIDI piano keyboard”

Roger Linn Design · LinnStrument FAQ
Link to this topic

The hardware

Specifications.

Checked

Playing surface

Pads
128 velocity-sensitive, RGBpoly aftertouch
MPE
Yes

Workflow

Sequencer
Yes
Arpeggiator
Yes

Connection

USB
USB-B
Pedal inputs
Footswitch
Power
USB bus power

Physical

Weight
1,650 g
Dimensions
399 × 209 × 25.4 mm

Manufacturer-published figures, not measurements · from rogerlinndesign.com.

Follow the evidence

Sources 13

1–6 of 13 sources

Read with context

Limitations & method.

As of

What to keep in mind 6

  1. This is a read of where opinion lands as of September 2026. The LinnStrument has been on sale since 2014 and keeps getting firmware, so the older reviews here describe the same hardware running much earlier software — and the playing surface itself gained a low-friction coating in 2020.

  2. Two of the sharpest sources are the maker's own pages. They are unusually candid — Roger Linn publishes his sensor's limits and his cost breakdown — but they are still his, so they are weighted as first-party rather than independent.

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