Ransanx specializes in high-quality electronic testing equipment, audio modules, and hobbyist components, including USB testers, amplifiers, and voice recorders.
Ransanx is a brand dedicated to providing reliable electronic components, testing tools, and audio equipment for DIY enthusiasts, hobbyists, and professionals. Their product lineup includes high-precision USB-C voltage and current testers, Hi-Fi stereo audio amplifiers, and versatile Bluetooth voice modules. In addition to testing gear, Ransanx offers an array of hobbyist electronics such as programmable voice recorders for stuffed animals, stepper motor controllers, and mini PC temperature displays.
Whether you are commissioning electronic devices, assembling DIY projects, or upgrading your home audio system, Ransanx delivers accessible and high-performance solutions. Browse our collection of Ransanx user manuals and setup guides to easily operate, troubleshoot, and optimize your devices.
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Set the R51 to USB Disk mode, connect it to your computer, copy the latest firmware file to the R51 storage, and enable the update firmware option in the settings menu.
The maximum recording duration for the X20 module is 1 minute when using the manual recording button. Uploaded MP3 files via the app must be under 5 MB.
Ensure your passive speakers' polarity is correctly connected, the audio cables are fully inserted, and the input mode matches your audio source. If using HDMI ARC or Optical inputs, ensure your output device is set to PCM format.
You can switch the input mode (Bluetooth, HDMI ARC, Optical, AUX, USB) by pushing the Main Volume Knob on the front panel or using the "Source" button on the remote control.