description MIDIPLUS X4 pro mini Overview
The MIDIPLUS X4 Pro Mini is a compact, 49-key MIDI keyboard controller featuring velocity-sensitive keys, aftertouch, and rotary encoders for controlling synthesizers and other music software applications. It offers USB connectivity and a durable construction suitable for studio or stage use.
help MIDIPLUS X4 pro mini FAQ
Does the MIDIPLUS X4 Pro Mini have velocity-sensitive keys and aftertouch?
The official specification lists 49 velocity-sensitive slim keys, but it does not list keyboard aftertouch. Buyers should treat aftertouch as unconfirmed rather than assuming the catalog description includes it. ([MIDIPLUS X4 Pro Mini](https://www.midiplus.com.tw/en/product-detail/X4pro-mini/))
What controls are built into the MIDIPLUS X4 Pro Mini?
It includes 8 velocity-sensitive pads, 9 assignable knobs, 8 buttons, transport controls, octave and transpose buttons, and pitch and modulation touch strips. The keyboard also has an OLED display for showing parameter changes. ([MIDIPLUS X4 Pro Mini manual](https://www.midiplus.com.tw/MIDIPLUS-Download-detail/0/Manual_Of_XII_XPro-mini-series/))
What connections does the MIDIPLUS X4 Pro Mini provide?
The controller has a USB Type-B port, a 3.5mm stereo headphone output, two balanced line outputs, and a sustain-pedal input. The manufacturer lists Windows XP through Windows 10 and Mac OS X in its compatibility information, so newer systems should be checked before purchase. ([MIDIPLUS X4 Pro Mini](https://www.midiplus.com.tw/en/product-detail/X4pro-mini/))
How portable is the MIDIPLUS X4 Pro Mini?
The X4 Pro Mini measures about 703 by 137 by 51 millimeters and weighs about 1.85 kilograms without its battery. It can receive power through USB or batteries, which suits mobile studio use. ([MIDIPLUS X4 Pro Mini manual](https://www.midiplus.com.tw/MIDIPLUS-Download-detail/0/Manual_Of_XII_XPro-mini-series/))
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