【GOLDHORN DSPA 406 V2.0｜4ch DSP Amplifier that Makes the Most of OEM Audio】

I like how easy the OEM audio is to operate, but I’m concerned about the thin sound and the vague stereo imaging.

That’s where the GOLDHORN DSPA 406 V2.0 comes in.

This DSP amplifier integrates a 4ch amplifier and a 6ch DSP, allowing you to fine-tune the music you hear inside the vehicle without making major changes to the factory system. From sound quality improvements that leverage the OEM speakers to systems that combine speaker replacements, it’s a model that’s easy to configure according to your vehicle and preferences.

Keep the Ease of Using OEM Audio, and Refine the Sound Impression

OEM audio has its operation and functions neatly tailored to the vehicle, but its range of sound adjustment is limited.

By combining with the DSPA 406 V2.0, you can use features such as time alignment, crossover, and equalization to adjust the timing and frequency-band balance of what reaches you from the left and right speakers to suit the cabin.

If the vocal position feels blurry, the sound doesn’t seem to come together in front of you, or the bass and mid/highs don’t blend well, you can revisit these issues from a different direction than simply replacing the speakers.

Even with the same speakers, how they sound will change depending on the installation method and DSP settings. If it were me, I would decide the combination by checking the vehicle’s OEM setup and your current speakers, rather than choosing the product by itself.

Enjoy Smartphone Music via USB and Bluetooth

With USB input, you can connect a compatible smartphone and play music. Thanks to the USB-DAC that supports up to 192kHz / 32bit, it’s also suitable if you want to reproduce compatible audio sources more precisely.

In addition, since it supports Bluetooth 5.0 and aptX HD, it’s an easy-to-use configuration if you want to enjoy music from your smartphone without using cables.

Listen casually with Bluetooth most of the time, and use USB when you want to listen more carefully. That kind of flexible use is one of the strengths of this DSP amplifier.

Simple System Upgrade with a Built-in 4ch Amplifier

Because the DSPA 406 V2.0 includes a built-in 4ch amplifier, you can drive front speakers and more without adding a separate amplifier.

If you want to start crafting a sound that goes one step beyond the OEM system without increasing the number of devices or complicating wiring, this is a choice that’s easy to consolidate.

It supports high-level input, RCA input, USB input, and Bluetooth input, so you can consider connection methods that fit not only an OEM-audio-based setup, but also the overall content of your system.

A DSP Amplifier to Plan with Installation and Tuning in Mind

A DSP amplifier isn’t a product where you’re done just by installing the unit.

It’s important to confirm the OEM system in your specific vehicle, the speaker configuration, the installation space, and your sound preferences, and then compile everything into a practical, no-overstretch solution—including wiring and mounting methods. Even after installation, you’ll adjust the soundstage and how the frequency bands connect while actually listening in the vehicle.

At LOGON, we’ll go through these options together from the start—whether to keep and use the OEM speakers, whether to move on to speaker replacement, and whether to combine a subwoofer—without assuming a fixed direction.

If you want to keep the OEM look and ease of operation, but also want to enjoy your usual music a bit more comfortably, please consult us while checking your vehicle’s current condition. We won’t push you toward a big system for the sake of it—we’ll think about how to build a sound that suits your current car.

■ Main Specifications / Specs

【Basic Information】
Product name: GOLDHORN DSPA 406 V2.0
Type: 4ch DSP amplifier
DSP configuration: 6ch DSP
Built-in amplifier: 4ch

【Amplifier Output】
Rated output: 4 × 50W (4Ω)
Rated output: 4 × 80W (2Ω)

【Inputs】
High-level input
RCA input
USB input
Bluetooth input

【USB-DAC】
Max supported: 192kHz / 32bit

【Bluetooth】
Bluetooth 5.0
Supported codec: aptX HD

【DSP Functions】
Time alignment
Crossover
Equalizer
Individual channel adjustment

【Supported Systems】
Configurations that make use of OEM audio
Front 2-way configuration
Front speakers + subwoofer configuration, etc.

【Expandability】
You can consider a configuration that supports future amplifier additions and system upgrades.

• For actual connection methods and compatibility, it’s necessary to check your vehicle’s OEM system and the installation details.