This is an introduction to the MetaModule Button Expander by 4ms Company, available at Takazudo Modular.
The MetaModule Button Expander is an 8-button expansion module exclusively for the MetaModule. By adding physical buttons, it enables more intuitive performance and parameter control.
This product is available for purchase below.
- Product Photos
- MetaModule Button Expander Features
- Usage Examples
- Specifications
- Included Accessories
- Product Warranty
- MetaModule + Expanders
Product Photos




MetaModule Button Expander Features
The MetaModule Button Expander is a compact 6HP expansion module equipped with 8 physical buttons.
8 Physical Buttons
Each button can be freely assigned to virtual parameters, switches, and knobs within the MetaModule. A single button can control up to 8 parameters simultaneously, allowing complex operations to be executed with a single action.
Daisy-Chain Connection
Up to 4 MetaButton Expanders (or compatible expanders) can be daisy-chained. This allows you to add up to 32 physical buttons to the MetaModule.
Flexible Button Modes
Each button operates in one of two modes:
Toggle Mode
Each press toggles between on/off. Ideal for mute, bypass, mode switching, etc.
Momentary Mode
Active only while the button is held down. Convenient for temporary effect application or gate triggering.
Ribbon Cable Connection
Connection to the MetaModule is made via the included 12-pin ribbon cable. A simple design that handles both power and data communication through a single cable.
Usage Examples
The MetaModule Button Expander can be used for the following applications:
Performance Control
- Sequencer start/stop
- Pattern switching
- Effect on/off
- Mute/solo control
Parameter Switching
- Oscillator waveform switching
- Filter type changes
- Envelope loop mode switching
- Quantize on/off
Multi-Parameter Control
Since a single button can change multiple parameters simultaneously, complex operations like the following can be executed at once:
- Preset recall (changing multiple parameters at once)
- Effect chain switching
- “Macro controls” that change the overall feel of a patch
Specifications
Basic Specifications
- Format: Eurorack
- Size: 6HP
- Depth: 24mm
- Power consumption: +12V 10mA, -12V 0mA, +5V 0mA
Connection
- Ribbon cable: 12-pin (for MetaModule connection)
- Daisy-chain: Up to 4 units connectable
Included Accessories
- Power ribbon cable (16-pin to 12-pin)
- MetaModule connection ribbon cable (12-pin to 12-pin)
- MetaModule connection adapter PCB
- Screws
- Instructions
Product Warranty
こちらの商品はメーカー規定で、一般的な通常の使用環境を前提とした1年の保証を約束していただいており、販売させていただいています。商品の不具合等がございましたらお問い合わせ下さい。
MetaModule + Expanders
MetaModuleには本体の他、拡張用の専用エキスパンダーモジュールが用意されています。
26HP hybrid module that lets you control VCV Rack plugins through physical knobs and jacks. Supports 160+ built-in modules and over 1,500 third-party plugins, with microSD and USB-C onboard for expansion.

Audio I/O expander for the MetaModule. Adds six 24bit/48kHz DC-coupled inputs and eight outputs—bringing the combined system up to 12 inputs and 16 outputs—and connects via a simple ribbon cable.

6HP 8-button expander designed for the MetaModule. Each button can be assigned to up to 8 parameters simultaneously, with toggle/momentary modes and daisy-chain support for up to four units.

Wi-Fi expander for the MetaModule. Transfers patch files wirelessly over an existing network and lets you browse, delete, and organize patches from a browser interface.

About 4ms Company
4ms Company is an American maker that has been designing and building innovative audio electronics for musicians since its founding in 1996. Today they are based in Portland, Oregon, right in the heart of the West Coast synthesizer scene.
They are known for products that fuse the intuitive feel of hardware with the flexibility of software — MetaModule (a hardware interface for software modules), Catalyst Sequencer, Looping Delay, Sampler, and more. With a focus on clean, low-noise, great-sounding instruments, and a lineup that spans both fully-built modules and DIY kits, they have something for everyone from beginners to seasoned builders.
Bonus: Modular Accessory Set by 電氣美術研究會 (Denki Bijutsu Kenkyukai) Included

In the hope that more people will get hands-on with modular synths, we have teamed up with 電氣美術研究會 to bundle a modular accessory set with this product.
The contents vary by season — patch cables, power cables, a dress-nut sample set, a mono splitter, and more. The set is included with the product, so please give it a try!
That concludes our introduction of the MetaModule Button Expander.
We hope you find this helpful.