Who is it for?

Lead player with limited setup space

You want a playable keyboard with pitch or modulation controls in a compact setup. Measure the available width and depth before choosing a small model.

Player of longer lead phrases

You want more keys within easy reach and are happy to choose an instrument with 37 keys. Compare the playing range and dimensions of the models you’re considering.

Player with an external synthesiser

You use separate hardware as your sound source. Check that the controller has the right MIDI or CV connection for your equipment.

What should you look for?

Start with the space available and the range you need for your phrases. Then check how you’ll connect to your sound source and control expression.

25 keys

Choose this if: space is your priority and your lead fits within two octaves, or you’re happy to switch octaves deliberately.

Trade-off: fewer keys are within easy reach, and expression controls vary between models.

37 keys

Choose this if: you want to play longer phrases with a wider range at your fingertips, and have room for a 37-key keyboard.

Trade-off: check that the model’s width will fit your setup; connections also vary between models.

What to consider What should you check? Who is this important for?
Space in your setup Compare the exact model’s width and depth with the space available, including room for cables. Novation lists the Launchkey Mini 25 MK4 as 339 × 177 mm; Arturia lists the MiniLab 3 as 355 × 220 mm. If every centimetre counts, I want to know whether the keyboard and controls will really fit in my space. Space is the top priority for around 31% of consumers.
Expression controls Check whether you want to use touch strips, sensors, knobs, a joystick or wheels, and whether your software or synthesiser can process the MIDI messages you need. When I want to adjust pitch or modulation during a phrase, it matters that the controls feel comfortable to use. Around 25% of consumers prioritise direct expression controls.
Connection to the sound source Decide whether you’ll connect via USB to a compatible computer or to external equipment. For TRS-MIDI, check the type too: Novation specifies type A for the Launchkey Mini 25 MK4. If I’m using an external synthesiser, the connection needs to match my equipment’s input. Around 25% of consumers put the connection to their sound source first.
Playing range at your fingertips Consider whether 25 keys are enough for your phrases or whether you’d prefer to switch octaves less often. Korg lists the microKEY2-37 as 565 mm wide. When I play a longer lead, I want to reach more notes without switching octaves in the middle of a phrase. Around 19% of consumers prioritise having a wider playing range at their fingertips.

Common buying mistakes

  • Comparing only the number of keys

    Two compact controllers can differ in width, depth, and the position or type of their expression controls. So the number of keys alone won’t tell you whether a model will work in your setup.

    Measure the space available and compare the full dimensions and controls listed for the exact model.

  • Assuming USB, five-pin MIDI and TRS-MIDI are interchangeable

    The connection needs to match your sound source. With TRS-MIDI, the wiring type can matter too. You may also need a suitable cable or adapter to connect an external synthesiser.

    Make a note of the controller’s output and your synthesiser’s input. For TRS-MIDI, check the type and cable specifications before connecting.

  • Thinking a software bundle is a standalone sound source

    A MIDI controller operates software or external equipment; that doesn’t mean the controller itself produces the sound you want. Software also needs a compatible computer or another suitable host.

    Decide in advance where your sound will come from, and check the system requirements for the software you want to use.

Brands to consider

Novation

The Launchkey Mini 25 MK4 is a compact option for a software-focused setup, with pads and rotary knobs.

  • Novation specifies dimensions of 339 × 177 mm for this model, along with two touch strips and a type A TRS-MIDI connection.
  • For connecting external equipment, check that the connection and wiring are compatible. The specifications listed don’t provide an independent assessment of playability.

Arturia

The MiniLab 3 is a 25-key option, while the KeyStep 37 mk2 offers a 37-key alternative with several connection options.

  • Arturia lists the MiniLab 3 as 355 × 220 mm, with a five-pin MIDI output. For the KeyStep 37 mk2, Arturia lists velocity sensitivity and MIDI-DIN, USB-C and CV/Gate connections.
  • These specifications apply to the models mentioned and don’t necessarily apply to other Arturia controllers.

Korg

The microKEY2 range includes a slim 37-key version for playing via USB.

  • Korg lists the microKEY2-37 as 565 × 139 mm, with separate pitch and modulation wheels.
  • The Dutch specifications list USB, but no DIN-MIDI output for this version, so check which connection your sound source requires.

Akai Professional

The MPK mini Plus combines 37 keys with wheels and connections for external equipment.

  • Akai lists five-pin MIDI inputs and outputs, plus CV/Gate, for the MPK mini Plus.
  • Don’t confuse the MPK mini Plus with the separate MPK mini Plus II; according to Akai, the models have different features and USB connections.

Nektar

The SE25 is designed as a small USB mini keyboard, while the Impact LX Mini adds features including a joystick and rotary knobs.

  • Nektar says you can assign SE25 buttons to functions such as pitch bend or modulation.
  • The DAW integration described for the SE25 requires registration and installation of integration files; the controls don’t include separate wheels.

Joybuy products

This Joybuy selection includes a 61-key keyboard with built-in sounds, for anyone who wants more keys readily available. Check that its size will fit your setup.

Black electronic keyboard with 61 keys

61-key electronic keyboard, black

Suitable if you want 61 keys readily available and are looking for a keyboard with built-in sounds; check that it will fit your setup.

61 keys; USB-MIDI; built-in sounds and speakers; recording function; metronome and music stand.

View at Joybuy

Frequently asked questions

Can I use a MIDI controller for my lead without a computer?

Yes, if your setup has a suitable external sound source, connection and power supply. Arturia lists a five-pin MIDI output for the MiniLab 3, and MIDI-DIN and CV/Gate for the KeyStep 37 mk2. These connections don’t make the controllers synthesizers with their own sounds.

Will any 3.5mm MIDI cable work between my controller and synthesiser?

No. Check the TRS-MIDI type at both ends. Novation specifies type A for the TRS-MIDI port on the Launchkey Mini 25 MK4; equipment using type B is wired differently. Check which adapter you need if necessary.

How can I avoid setup problems before a performance?

Test your MIDI connection, assigned expression controls and sound source in advance, and check the software requirements for the exact model. The DAW integration described for Nektar’s SE25 requires registration and installation of integration files; this isn’t a general requirement for all controllers.

What guarantee and cooling-off period apply to online purchases in the Netherlands?

According to the Dutch government, consumers are entitled to a product that works properly, and the seller must provide a solution if a product is faulty; there’s no fixed statutory guarantee period in the Netherlands. A 14-day cooling-off period applies to many distance purchases. Check who the seller is and which terms and conditions apply to your purchase.

Is CE marking automatically required for every MIDI controller?

Not simply because of the product category. According to the European Commission, CE marking is required when the applicable harmonised EU rules say it is. Check which rules apply to the specific product and what conformity information the seller provides.