【AT-RX40FB｜MIDI Fuse Block for Car Audio】

As a car audio system grows larger, it becomes important to organize how power is distributed to multiple devices such as amplifiers. AT-RX40FB is a car-audio fuse block dedicated to MIDI fuses.

The input side supports three-way connections and allows you to connect 2AWG and 4AWG power cables. The output side provides four channels, and is compatible with 4AWG and 8AWG cables. Even if you want to split power to multiple amplifiers, you can easily consolidate the power distribution lines—including the fuses—and keep the wiring neatly organized.

The unit features a heterogeneous five-layer quint hybrid coating. Since proper connections in the power section are also the foundation of the sound, there is value in reviewing even the power-related components if you are considering adding an amplifier or upgrading your system.

However, a fuse block is not a part you simply install and consider done. The appropriate setup varies depending on cable thickness and length, amplifier configuration, fuse rating/capacity, and installation method. If it were me, I would think through how to use it by first checking your entire current system, rather than deciding only on the product upfront.

If you are considering power distribution using AT-RX40FB or adding an amplifier, let’s organize a sensible, non-stressful configuration together while looking at your vehicle and your current wiring. It’s a part you want to finish properly—not only for changes in sound, but also including safety and maintenance.

Main Specifications / Specs

【Basic Information】
Product name: AT-RX40FB
Brand: Accessory
Type: MIDI fuse block for car audio

【Connections】
Input: Three-way
Compatible input cables: 2AWG, 4AWG
Output: Four channels
Compatible output cables: 4AWG, 8AWG

【Compatible Fuses】
Dedicated to MIDI fuses

【Coating】
Heterogeneous five-layer quint hybrid coating