JENSEN JA4B JA Series 4 Channel Full Range Amplifier
Bring more power to your entire system
The JENSEN JA4B is a 4-channel full-range amplifier designed to give your vehicle's audio system more power and presence. With up to 360 watts of power, it gives compatible speakers the extra output they need for a stronger, more engaging listening experience.
Power across four channels
The 4-channel design makes the JA4B a versatile addition to a multi-speaker system. Use it to add dedicated amplification to your front and rear speakers or build it into a larger aftermarket audio setup.
As a full-range amplifier, the JA4B is designed to handle a broad range of frequencies, making it a flexible choice for powering compatible speakers.
Key Features
- JA Series 4-channel full-range amplifier
- Up to 360 watts of power
- Four-channel design
- Full-range amplification
- Designed for vehicle audio systems
- Compact design for flexible installation
- Ideal for powering multiple compatible speakers
More power for the music you love
The JA4B gives your car audio system the extra amplification it needs without overcomplicating the setup. Add more power to multiple speakers and enjoy a fuller, more energetic sound on the road.
JENSEN JA4B. Four channels. More power. Bigger sound.
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| JA4B |
|
| Amplifier type |
4-channel Class D |
| Total dynamic power |
740 W |
| RMS power |
90 W × 4 @ 4 Ω |
| RMS power |
115 W × 4 @ 2 Ω |
| RMS power bridged |
230 W × 2 @ 4 Ω |
| Dynamic power |
100 W × 4 @ 4 Ω |
| Dynamic power |
125 W × 4 @ 2 Ω |
| Dynamic power bridged |
255 W × 2 @ 4 Ω |
| Maximum dynamic power |
125 W × 4 @ 4 Ω, 185 W × 4 @ 2 Ω, 365 W × 2 @ 4 Ω bridged |
| Audio inputs |
High level speaker wire + low level RCA |
| RCA pass through |
Yes |
| Crossover |
Adjustable high pass / low pass, 32 Hz to 320 Hz |
| Bass boost |
Adjustable at 45 Hz |
| Gain adjustment |
200 mV to 6 V |
| EQ |
5-band EQ |
| Frequency response |
20 Hz to 20 kHz |
| Signal to noise ratio |
70 dBA |
| App control |
Yes, Jensen Amp App |
| Illumination |
RGB customizable |
| CTA-2006-D |
Certified |
| Fuse |
25 A × 2 |
| Power / ground wire |
4 to 8 AWG |
| Speaker wire |
12 to 16 AWG |
| Dimensions |
2.16" H × 8.38" W × 5.59" D |
| Warranty |
4-year limited warranty when registered within 60 days |