Alesis

Alesis VI49 49-Key USB MIDI Keyboard Controller

4.5 (1505 reviews)

49 semi-weighted keys with aftertouch, 16 RGB pads, and deep assignable control give producers a full-featured MIDI command center for any DAW.

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Overview

The Alesis VI49 is a 49-key USB MIDI controller built around the idea that a single piece of gear should handle both performance and production control without compromise. The keys are full-sized, square-front, and semi-weighted — a meaningful distinction from the feather-light synth action common at this price point. Crucially, they transmit channel aftertouch, which means a held note can be shaped with continued pressure for vibrato, filter modulation, or expression on any patch that responds to MIDI CC 1 or aftertouch messages. Alongside the keyboard, 16 velocity-sensitive RGB pads handle drum programming and clip launching, while 12 assignable knobs and 36 assignable buttons put DAW and plugin control within reach of your hands during a session. The 5-pin MIDI Out is a hardware-connectivity feature that genuinely distinguishes the VI49 from competitors at its price tier, providing a direct path to hardware synthesizers without additional interface hardware.

The VI49 is aimed at the serious home producer or music student who has outgrown a basic 25-key MIDI controller and needs a hub that handles composition, beat-making, and mix control from one surface. It ships with Ableton Live Lite and Xpand!2 — not demo nags but functional tools that give a new producer an immediate workflow. USB bus power keeps the setup simple: one cable connects to your Mac or PC, delivering both power and MIDI data with class-compliant plug-and-play recognition across all major DAWs. The controller is most at home on a fixed studio desk where its combination of keys, pads, and assignable controls can be fully mapped to a production template — it is less optimized for performers who need to transport gear regularly, where its build quality relative to more road-hardened alternatives becomes a consideration.

Key Features

MIDI Keyboard with 49 full-sized, square-front, semi-weighted keys with after touch. USB MIDI and 5-pin MIDI Out offer flexible MIDI connectivity

Manipulate plugins and virtual instruments with hands-on controls. With VI49, you can open and close filters on virtual synthesizers, adjust volume levels in your mix, activate effects, and much more

16 velocity-sensitive trigger pads with illuminated RGB feedback for beat production and clip launching. Pitch and modulation wheels deliver expressive, creative control

36 assignable buttons and 12 assignable knobs interface with your music software. Seamless visual feedback via LED screen and illuminated buttons and knobs

Production software included: Ableton Live Lite and Xpand!2 by AIR Music Tech (downloads). USB-powered and plug-and-play support for Mac and PC

Specifications

Keys
49 full-sized, square-front, semi-weighted with aftertouch
Pads
16 velocity-sensitive RGB trigger pads
Assignable Knobs
12
Assignable Buttons
36
MIDI Connectivity
USB MIDI + 5-pin MIDI Out
Power
USB bus-powered
OS Compatibility
Mac and PC (plug-and-play)
Included Software
Ableton Live Lite, Xpand!2 by AIR Music Tech (downloads)
Color
Black

Pros & Cons

👍 Pros

  • 49 full-sized, semi-weighted keys with aftertouch deliver expressive performance nuance that entry-level, synth-action controllers cannot replicate.
  • Dual MIDI output — USB and 5-pin DIN — routes to hardware synths and software instruments simultaneously without additional hardware.
  • 16 velocity-sensitive RGB pads with illuminated feedback serve both beat production and clip launching in Ableton Live without feel like an afterthought.
  • 12 assignable knobs and 36 assignable buttons provide enough hands-on control to manage a full mix session without touching a mouse.
  • USB bus power eliminates the need for a wall adapter, keeping the cable footprint on the desk minimal.

👎 Cons

  • The semi-weighted action, while an improvement over synth-action keys, does not replicate the hammer-weighted resistance of a piano or weighted stage keyboard — pianists transitioning from acoustic instruments will notice the difference.
  • The 5-pin MIDI Out carries only a single port; producers with multiple hardware instruments in a MIDI chain will need a MIDI thru box or additional interface to distribute signal.
  • Aftertouch is channel aftertouch, not polyphonic aftertouch — pressure applied to one key affects all currently held notes simultaneously, which limits expressive control on polyphonic phrases.
  • At 49 keys, the controller spans just over four octaves; composers working across wider harmonic ranges will reach the octave transpose buttons frequently enough to find it interruptive.
  • The LED screen provides visual feedback for parameter values but is small — reading assigned CC numbers across 12 knobs at a distance requires leaning in.

Frequently Asked Questions

Fully USB bus-powered. The controller draws everything it needs from the host USB port — no wall adapter, no separate power supply. This makes it genuinely portable and clutter-free at a home studio desk.
Both. The VI49 includes a 5-pin MIDI Out port alongside USB MIDI. This means you can route MIDI to hardware synthesizers, drum machines, or vintage gear with MIDI input without needing a separate USB-to-DIN interface. The 5-pin output transmits on the MIDI channel and data generated by the keyboard and pads.
Yes to both. The keys respond to how hard you strike them (velocity), and they also transmit channel aftertouch — meaning sustained pressure after the key bottoms out sends an additional MIDI message. Aftertouch is what lets you add vibrato or expression to a held note on a synth patch without reaching for the mod wheel.
Each knob and button can be mapped to any MIDI CC number, channel, and value range via the VI49's editor software. This means they can control virtually any automatable parameter in your DAW or plugin — filter cutoff, reverb send, track volume, plugin bypass. Assignments are stored in the controller's memory across presets.
The VI49 is class-compliant USB MIDI and works with any DAW on Mac or PC that accepts standard MIDI input — Ableton Live, Logic Pro, FL Studio, Studio One, Pro Tools, Reaper, and others. It ships with download codes for Ableton Live Lite and Xpand!2, which get a new producer running immediately.