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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.
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The DOWN4SOUND JP154 is a 1000W RMS 4 Channel Class D car audio amplifier built for strong mids, highs, and versatile multi speaker systems. Engineered for clean power delivery and efficient performance, the JP154 delivers reliable multi channel output with precise tuning control in a refined performance chassis.
Power Output
- 4 × 150W RMS at 4 ohms
- 4 × 250W RMS at 2 ohms
- 2 × 500W RMS at 4 ohms bridged
- 1000W RMS total rated output at 2 ohms
Power ratings tested at 14.4V and 1 percent THD for consistent real world performance.
Precision Crossovers Fully Adjustable
- Frequency response 10Hz to 24kHz
- Signal to noise ratio 93dB
- Damping factor 130
- Input sensitivity 0.2V to 6V
- High pass filter 20Hz to 800Hz
- High pass multiplier x1 and x10 from 200Hz to 8kHz
- Low pass filter 50Hz to 800Hz
- Low pass multiplier x1 and x10 from 500Hz to 8kHz
- Band pass capable
- 41 click potentiometer for HPF and LPF adjustment
Compact Installation Size
- 250mm × 190mm × 57mm
- 9.84 × 7.48 × 2.24 inches
Designed for performance focused installations where controlled multi channel power and efficient Class D operation matter.
Smart Protection Circuit
- Thermal protection
- Short circuit protection
- Voltage protection
- DC overload protection
Engineered for reliable operation in demanding daily use systems.
Technical Specifications
- Channels 4
- Amplifier class Full range Class D
- Frequency response 10Hz to 24kHz
- Signal to noise ratio 93dB
- Damping factor 130
- Input sensitivity 0.2V to 6V
- Working voltage 9V to 15.5V
Why Choose the JP154
The JP154 delivers efficient 4 channel power with precise crossover control and bridgeable flexibility. It is built for systems that demand clean midrange authority, strong output, and modern Class D efficiency in a refined finish.
- Up to 1000W RMS total output
- Efficient full range Class D design
- Bridgeable 4 channel flexibility
- Wide tuning capability
Add the JP154 to your system and experience clean controlled power with modern efficiency.
Authorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.


