Korg

Korg NANOKEY-FD BK Foldable MIDI Keyboard - Black

2.8 (6 reviews)
USB-C

A foldable 25-key MIDI keyboard that fits in your pocket, with USB-C connectivity and built-in performance tools.

$119.99*$139.99Save 14%
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

The Korg nanoKEY Fold is a 25-key MIDI keyboard engineered around a novel foldable design that collapses the controller to roughly the dimensions of a smartphone. At just 5.79 x 2.87 x 0.67 inches when folded and weighing 6.7 ounces, it slips easily into a pocket or bag, making it one of the most travel-friendly MIDI controllers on the market. The membrane keys are deliberately designed to be quiet — a meaningful advantage for creating music in cafés, libraries, on public transport, or anywhere discretion matters. Despite their compact size, the keys respond to 13 levels of velocity, giving players enough dynamic range for expressive melodic and chord work.

Beyond basic note input, the nanoKEY Fold packs in a surprisingly rich set of performance features. Scale guides help players stay in key, while chord mode lets you trigger full chords from single key presses. The built-in arpeggiator adds rhythmic pattern generation, and assignable touch sliders provide real-time control over parameters like filter cutoff or volume. Split mode divides the keyboard into two zones for layering or playing different sounds simultaneously, and scene memory slots let you save and recall complete configurations. Connectivity is handled through USB-C for plug-and-play use with computers, smartphones, and tablets, while a TRS-MIDI output (with included TRS-DIN converter) allows direct connection to hardware synthesizers and drum machines without any adapter.

Key Features

Unique Foldable Design: Fits comfortably in your pocket when folded, making it easy to carry and use anywhere.

Quiet Keys: Membrane keyboard provides a solid feel without audible noise, perfect for discreet play. The nanoKEY Fold is a foldable, smartphone-sized MIDI keyboard that lets you create music anywhere with its quiet keys, USB-C and MIDI connectivity, and a range of performance feature

Abundant Performance Functions: Includes scale guides, chord mode, arpeggiator, assignable touch sliders, split mode, and memory slots.

USB-C and TRS-MIDI Compatibility: Plug-and-play with smartphones, tablets, and MIDI sound sources.

Stylish and Versatile: Stylish and Versatile: Available in five vibrant color variations to match your style.

Specifications

Brand
Korg
Model
NANOKEY-FD BK
Type
Foldable MIDI Keyboard
Number of Keys
25
Key Type
Membrane
Velocity Sensitive
Yes (13 levels)
MIDI Output
1 x 1/8" TRS MIDI Out (TRS-DIN converter included)
USB
1 x USB-C
Power Supply
USB Powered
Dimensions (Folded)
5.79 x 2.87 x 0.67 inches
Weight
6.7 ounces (190 grams)
Color
Black

Pros & Cons

👍 Pros

  • Folds to smartphone size for unmatched portability among MIDI keyboards
  • Membrane keys operate quietly, allowing discreet music creation in public or shared spaces
  • USB-C and TRS-MIDI output provide flexible connectivity to computers, mobile devices, and hardware synths
  • Built-in arpeggiator, chord mode, and scale guides add creative tools without needing software
  • Velocity-sensitive keys with 13 levels offer expressive playing despite the compact form factor

👎 Cons

  • 25 miniature membrane keys lack the feel and travel of full-size synth-action keys
  • The compact key spacing requires adjustment and may cause more frequent mis-hits for players with larger hands
  • No built-in sound engine means it always requires a connected device or sound module to produce audio
  • Limited to USB bus power, so it cannot operate standalone without a host device
  • Foldable hinge mechanism introduces a physical gap in the middle of the keybed

Frequently Asked Questions

When folded, the nanoKEY Fold measures just 5.79 x 2.87 x 0.67 inches — roughly the size of a large smartphone — and weighs only 6.7 ounces (190 grams), making it easy to slip into a jacket pocket or small bag.
No batteries are needed. The nanoKEY Fold is USB powered, drawing power directly from your connected smartphone, tablet, or computer via the USB-C port.
Yes, the membrane keys support 13 levels of velocity sensitivity, allowing you to play with dynamic expression despite the compact key size.
Yes, the USB-C port allows plug-and-play connection to smartphones and tablets that support USB-C. It also includes a TRS-MIDI output with a TRS-DIN converter for connecting to hardware synthesizers and sound modules.
The nanoKEY Fold includes scale guides, a chord mode, a flexible arpeggiator, assignable touch sliders, split mode, and scene memory slots for saving and recalling your configurations.