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Many in-stock orders ship within 1-2 business days, but timing varies by item. Custom, built-to-order, oversized, special-order and supplier-direct products may need extra processing time. Free shipping applies to qualifying orders over $99 in the contiguous US. Approved returns may be subject to a restocking fee.
Most products are covered by the manufacturer's warranty against defects. Damage from over-powering or improper installation isn't covered — we'll help coordinate any valid claim.
Tell us your vehicle, subwoofers and electrical setup and our team will help you match the right gear. Reach out before you buy.
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Experience unparalleled audio power with the Down4Sound JP 10.4. This 4 Channel Car Amplifier is a powerhouse of performance, delivering an impressive 6000W output. Tailored for audiophiles and car audio enthusiasts, the JP 10.4 is a fusion of high power and meticulous engineering, featuring a SNAZZY bass knob, bandpassable crossover, and true Tiffany RCA connections for pristine sound quality. It's more than just an amplifier; it's a revolution in car audio technology.
Key Features
- Powerful Output: Delivers 1000W per channel RMS at 4 OHM, establishing it as one of the most potent amplifiers available.
- Bass Control: Comes with a SNAZZY bass knob for precise bass level adjustments.
- High-Fidelity Connections: True Tiffany RCA connections ensure the highest quality of sound transmission.
Enhanced Connectivity
- Dual 0GA Power and Ground Inputs: For stable and efficient power delivery.
- Up to 4GA Speaker Outputs: Compatible with a wide range of speaker systems.
Technical Specifications
RMS Power Ratings
- 2ohm: 1300W x 4
- 4ohms: 1000W x 4
- 4ohms Bridged: 3300W
- Frequency Response: 10Hz - 21Khz
Filters
- High Pass: 20Hz - 800Hz (Multiply: x1, x10 ranging from 200Hz-8KHz)
- Low Pass: 50Hz - 800Hz (Multiply: x1, x10 ranging from 500Hz-8KHz)
- Input Sensitivity: 6V - 0.2V
- Signal to Noise Ratio: 90 Db
- T.H.D @ 4ohm: 0.1%
- Fuse Rating: 550A TOTAL
- Dimensions: 19.68" L X 9.37" W x 2.71" H
Additional Features
- Class D Technology: Ensures efficient and high-quality sound reproduction.
- Plexi Backplate: Provides both durability and a sleek look.
- Internal High-Speed Fan: Keeps the amplifier cool during high-performance usage.
- Origin: Made with pride in South Korea.
- Recommendation: For optimal performance with a stock radio, use a quality lineout converter or DSP.
Important: Electrical Upgrade Required for Warranty
To maximize the performance of this amplifier, an electrical upgrade is mandatory. Not upgrading your electrical system will void the warranty. The required upgrades include:
- The Big 3: Crucial for managing the increased power demands.
- Upgraded Alternator: To ensure a sufficient power supply.
- Reserve Battery(s): For consistent and reliable power delivery.
The Down4Sound JP 10.4 Amplifier is not just an amplifier; it's a testament to superior sound engineering. Designed for those who value their audio experience, it offers unmatched power and precision, all encased in a sleek finish.
Authorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.


