【N-04｜Accessories for High-Frequency Noise Reduction in Car Audio】

From hybrid vehicles and EVs to today’s cars in general, many electronic devices are installed, such as inverters, switching power supplies, and various control computers. If you feel that the sound of your car audio has “a slightly rough texture,” “the treble doesn’t settle down,” or “the sonic image is hard to bring together,” it’s worth considering countermeasures against high-frequency noise tailored to the condition of your vehicle and system.

N-04 is an accessory designed to suppress and attenuate the effects of high-frequency noise generated by in-vehicle electronic equipment. It achieves this by arranging film capacitors with excellent high-frequency characteristics by capacitance value, thereby reducing high-frequency impedance.

Installing it doesn’t necessarily produce the same kind of change in every vehicle. Because the way you perceive the effect varies depending on the vehicle’s power environment, the factory system, and the configuration of your car audio, I would consider introducing it after confirming your current audio concerns and the overall system—rather than judging based on the unit alone.

It can also be used together with the popular BODY Grounding Strengthening BOX ve-02 (including the former product VE-01). Depending on the status of the power supply and grounding, combining them may lead to improvements such as reduced roughness and better cohesion in the sound.

Even with the same N-04, the final result and the points you should check will differ depending on where and how it is integrated. At Logon, we confirm your vehicle model, factory audio, additional equipment, and your current impression of the sound, then organize together whether it’s the right countermeasure—before guiding you. It’s an item I’d also like you to consult about once, especially if you’re considering improving sound quality but aren’t sure where to start.

Main Specifications / Spec

【Basic Information】
Product name: N-04
Type: High-frequency noise reduction accessory for car audio

【Configuration / Functions】
Film capacitors with excellent high-frequency characteristics arranged by capacitance value
Reduction of high-frequency impedance
Suppression and attenuation of high-frequency noise generated by in-vehicle electronic equipment

【Products Compatible for Use Together】
BODY Grounding Strengthening BOX ve-02
Former product VE-01、】【 恒一