【ONE 80.4｜4-WAY AB-Class Power Amplifier】

Want to add a bit more thickness to the sound of your factory audio, or really bring out what your system can do after replacing your speakers? That’s exactly what the ONE 80.4 is for.

With a 4-channel AB-class amplifier design, this model is easy to incorporate not only for front speakers but also into system setups that include rear speakers. It complements the power and headroom that are difficult to achieve with a built-in amplifier alone, helping you fine-tune vocal and instrument sounds to be more enjoyable and easier to listen to.

Since it supports high-level inputs, it’s also a practical option when you want to develop your system while keeping your factory navigation and factory audio. Its input sensitivity is wide-ranging from 0.35 to 16V, making it easier to adjust to the vehicle’s output and your overall system configuration.

It also supports switching high-pass and low-pass filters. By matching it with your speakers and subwoofer(s), you can organize the frequency ranges each component handles. Not only does adding an amplifier matter—thinking through what role each speaker will play can significantly change how well the sound connects and how easy it is to listen to.

Even with the same amplifier, the final result varies depending on power supply and wiring routing, installation method, and gain settings. At LOGON, we confirm your vehicle’s factory system, your intended use, and your current audio concerns, and then propose a configuration that’s realistic and hassle-free.

And if you think, “I want to improve the sound a little, but I’m not sure where to start,” you don’t need to decide on the amplifier first. Let’s sort out the direction together while listening in real life, including how it will pair with your speakers and subwoofer(s).

Main Specifications / Specs

【Basic Information】
Product name: ONE 80.4
Type: 4-channel AB-class power amplifier

【Inputs / Connections】
High-level input sensing power-on: Included
Input sensitivity: 0.35–16V
Input connector: High-level / RCA

【Filters】
High-pass filter: Switchable
Low-pass filter: Switchable

【Other】
G-card slot: Included
Remote volume control: Optional
Operating voltage: 11–16V