【HB 410 ll 8A｜10ch DSP Amplifier with Built-in Music Player】

You may want to fine-tune the sound of your factory audio a bit more. Soundstage and balance can be difficult to get right with speaker replacement alone. If that sounds like you, consider the HB 410 ll 8A.

This DSP amplifier integrates a music player, a 10-channel DSP, and an 8-channel power amplifier. It lets you handle everything—from music playback to tuning the sound for the vehicle, and outputting to each speaker—with a single unit. It’s designed to make it easier to build a in-car audio system without adding multiple external devices.

Tune for the vehicle to organize the sound

In a car, the distance from the driver’s seat and the passenger’s seat to the speakers differs, and with the factory setup you may find the sound image position or left-right balance to be less than ideal.

The HB 410 ll 8A supports level adjustment for each channel, time alignment, crossover settings, and more. You can make detailed adjustments while checking the conditions inside the car to address issues such as vocals sounding shifted to one side, the bass and mid/highs not blending properly, or listening fatigue when you turn the volume up.

Because it also supports 10-channel line outputs, it’s a convenient configuration for those planning future system upgrades, such as front/rear speakers and subwoofers.

Simple music playback with just one unit

The main unit has a built-in music player, allowing you to play audio files such as MP3, FLAC, and WAV. It supports digital input via USB-C and Bluetooth 5.1 streaming, so you can choose the most suitable method based on how you usually listen to music.

If you want to expand your system while keeping the sound of your factory head unit, the fact that it supports both RCA input and high-level input is also useful. Since connection methods and adjustment contents vary depending on the vehicle and the factory audio specifications, in practice you’ll confirm the vehicle’s system and decide the configuration accordingly.

Even with the same equipment, the final result changes with installation and adjustment

A DSP amplifier isn’t the kind of equipment that will automatically produce great sound just by installing it. It’s important to set it up while considering the combination with your speakers, the condition of the input signals, the role of each channel, and how it sounds from inside the vehicle.

At our shop, we confirm your vehicle model, factory system, the music you usually listen to, and your sound preferences—then we organize the required number of channels and the connection method. We’d like to design the wiring and installation approach so it doesn’t become inconvenient to use later.

If I were choosing, I would organize first how much you want to change the sound from your current system, rather than deciding based on the HB 410 ll 8A’s standalone specifications alone. Even if you plan to replace speakers or add a subwoofer, looking at the overall balance from the start makes it less likely that you’ll struggle to change the configuration later.

If you want to keep the convenience of the factory setup but make the sound more to your liking, let’s decide the direction together while discussing your vehicle specifications and your preferences.

Main specifications / specs

【Basic Information】
・Product name: HB 410 ll 8A
・Type: 10ch DSP amplifier with built-in music player
・DSP: 32bit audio signal processor
・Operating sample rate: 48kHz / 24bit

【Amplifier Section】
・Output power: RMS 23W × 8ch
・Output power: MAX 70W × 8ch
・Applicable load: 4Ω stereo
・Damping factor: 100 or more
・Frequency response: 10Hz–40kHz (+0/-1dB)
・Harmonic distortion: 0.04%
・S/N ratio: 100dB or more

【Inputs】
・RCA external input: 2ch
・High-level input: 4ch speaker input
・RCA input sensitivity: 1V–6V
・High-level input sensitivity: 4V–12V
・CH5–CH8 input sensitivity: 4V–26V
・RCA input impedance: 20kΩ
・High-level input impedance: 22Ω
・Digital input: OTG (USB-C)
・Bluetooth input: 5.1 streaming
・Auto power-on function: Supported (when high-level input is used)

【Outputs / Connection】
・DSP output: 10ch LINE OUT
・RCA output voltage: 3V
・CH9 / CH10 output voltage: 9V
・Remote terminals: Remote IN ×1, Remote OUT ×1
・Remote output current: 500mA (max)

【Music Player】
・Supported file formats: MP2 / MP3 / MP4, WMA, APE, FLAC, AAC, M4A, WAV, AIF, AIFC

【DSP Adjustments】
・Output level: 0dB to -60dB
・Level adjustment step: 1dB / step
・Time alignment step: 0.021ms / step
・A/D converter: 32bit Asahi Kasei AK7735EQ
・D/A converter: 32bit Asahi Kasei AK7735EQ

【Power / Dimensions】
・Operating power supply voltage: 10.0V–16.0V
・Idle current: 0.8A or less
・Fuse: ATO 15A ×1 (between connector cable lines)
・Dimensions: 190 (W) × 45.5 (H) × 126 (D) mm
・Weight: 1.0kg

【Included Accessories】
・USB cable 1.8m
・20-pin power & speaker connection cable
・Bluetooth module cable