【CXA800.1 Monoblock Power Amplifier｜Drives a Subwoofer Powerfully with 1Ω Capability】

You’ve added a subwoofer, but you want a bit more depth in the bass. You don’t just want to feel the presence of the low end when you turn up the volume—you want to notice it clearly even at your usual listening levels. That’s exactly what the CXA800.1 is for.

This monoblock power amplifier supports output of 800W at 1Ω, 600W at 2Ω, and 300W at 4Ω, with specifications designed to be easy to use for subwoofer applications. Its compact Class-D design makes it easier to install even in limited in-car space, and it serves as a solid base amplifier that lets your subwoofer play with plenty of headroom.

Equipped with KickEQ™ for adjusting bass quantity, a variable low-pass filter from 50–200Hz, and a subsonic filter of 24dB/oct. It’s not just about making the bass louder—you can tune it to a balance that’s easy to listen to in the vehicle by considering how the subwoofer and the front speakers work together. When you play your usual tracks, you’ll notice clearer definition in the bass and kick, giving the overall music a sense of added body.

When paired with a factory navigation system or factory audio, it also supports high-level input up to 40V. It’s easier to consider connection methods based on the vehicle’s output specifications, and in some cases you may be able to configure it without using a line output converter. With a full-range RCA pass-through output as well, it’s an amplifier that’s easy to expand if you plan to add other amplifiers in the future.

However, if you choose an amplifier based only on output, you may end up with bass that stands out too much, or a connection with the front speakers that sounds unnatural. After checking the installation location, power wiring, subwoofer specifications, and even the factory system on the vehicle side, you finally achieve an easy-to-use sound by adjusting the filters and gain.

If it were me, I wouldn’t decide on the CXA800.1 based on standalone specs alone—I’d choose it after taking into account the subwoofer you’re using now and the system configuration you plan for next. Even if you want to enjoy the bass firmly but would like to avoid it getting too loud inside the cabin, please share your preferences. We’ll think together about a practical configuration that fits your vehicle.

Key Specifications

【Basic Information】

• Product Name: CXA800.1
• Type: Monoblock Power Amplifier
• Amplification Method: Class-D

【Rated Output】

• 4Ω: 300W × 1
• 2Ω: 600W × 1
• 1Ω: 800W × 1

【Frequency Response & Adjustment Functions】

• Frequency Response: 25–200Hz (+0/-1dB)
• Variable Low-Pass Filter: 50–200Hz, 12dB/oct
• Subsonic Filter: 25Hz, 24dB/oct
• KickEQ™ Low-Frequency Boost: 0–6dB, 40Hz

【Input & Signal】

• Low-Level Input Sensitivity: 125mV–5V
• High-Level Input Sensitivity: 1V–40V
• Signal-to-Noise Ratio: 95dB or higher (A-weighted)
• Speaker-Level Input: Up to 40V
• Full-Range RCA Pass-Through Output: Yes

【Other Features】

• FIT+™ compatible
• Turn-on/Turn-off Delay: Approximately 3 seconds
• Compatible with remote bass controller
• Includes mounting hardware for vertical installation

【Dimensions (Main Unit)】

• Approx. H5.9cm × W17cm × L20.6cm

Shop Owner Komezō (Komizo)