【POWER-220.4｜A Compact Digital Power Amplifier for Enjoying Higher-Quality Sound】

You’d like to add a bit more depth and information to the sound from your factory audio. But you’re concerned about the space required to mount a larger amplifier and about power consumption.

That’s where the POWER-220.4 comes in.

The circuitry for sound-quality enhancement is condensed into a compact body measuring 249 (W) × 50 (H) × 146 (D) mm. Even in vehicles where it can be difficult to secure a large installation space, this unit is sized to make system upgrades an easy option. It also features low power consumption thanks to its digital (Class D) design.

Inside, it uses a MUSES-8820 op-amp for the PWM conversion drive section that determines the sound of the digital amplifier. In addition, with a 1-chip IC transconductance amplifier made in Japan, it is designed to achieve stable operation while suppressing noise intrusion.

The design also pays attention to appearance: the matte-black finished body naturally blends into your car interior. With a design where an adjustment panel appears when the black plate is removed, it maintains functionality while projecting a smart impression that doesn’t overemphasize the amplifier’s presence.

An amplifier isn’t something that’s “finished” just by installing it. The final impression will vary depending on adjustments such as the combination with factory audio and speakers, how you take power, installation methods, and gain.

At LOGON, we work with you to consider where to incorporate the POWER-220.4 so you can maximize its effect—while confirming your vehicle’s system and how you use it. We’ll propose a reasonable system upgrade that includes how much you want to improve your current sound and what kind of music you usually listen to.

Key Specifications

【Basic Information】
Product name: POWER-220.4
Type: Digital (Class D) power amplifier

【Main Parts】
Op-amp for PWM conversion drive section: MUSES-8820
Transconductance amplifier: 1-chip IC, made in Japan

【Main Unit Dimensions】
Width: 249 mm
Height: 50 mm
Depth: 146 mm

【Other】
Low power consumption design
Matte-black finish
Comes with adjustment panel cover