Jensen JA4B 4 Channels 740 Watt Amplifier


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Jensen Amp Series
The new Jensen JA series amplifiers leverage 90+ years of audio excellence combined with modern smartphone technology to deliver the high-quality sound you require with the convenience and usability you seek.

More than audio
In addition to customizing the audio options, the app also lets you choose RGB illumination options. Match the amp colors to your car interior or change colors on the fly to match your mood. The easy-to-see color wheel makes it simple to choose the prefect shade.

Built Without Compromise Small Size, Big Sound The Class-D amplifier design provides nearly double the efficiency of analog class AB amplifiers in a much smaller footprint. This lets you install them in very small spaces and to leaves trunk space for that road trip cooler or suitcase.

Jensen DSP Amp app (Apple®/Android™) to control illumination and system set-up via Bluetooth® (Free App required for system set-up)
RGB Custom color illumination via Bluetooth app control
Class D design
Amplifier dimensions: 2.16″ x 8.38″ x 5.59″ (HxWxD)

Inputs / Outputs:
High level (speaker wire)
Low level (RCA)
RCA Pass-thru outputs

Continuous Power Output :
90W RMS x 4 Channels at 4 ohm
115W RMS x 4 Channels at 2 ohm
230W RMS x 2 Channels a 4 ohm Bridged (1% THD+N)

Dynamic Power :
100W x 4 Channels at 1kHz at 4 ohm
125W x 4 Channels at 1kHz at 2 ohm
255W x 2 Channels at 1kHz at 4 ohm Bridged (1% THD+N)

Maximum Dynamic Power :
125W x 4 Channels at 1kHz at 4 ohm
185W x 4 Channels at 1kHz at 2 ohm
365W x 2 Channels at 1kHz at 4 ohm Bridged (10% THD+N)

Frequency response: 20 Hz ~ 20 Hz
Signal to noise ratio 70 dBA
Adjustable bass boost at 45 Hz
5-Band EQ
Gain adjustment: 200 mV ~ 6 V
Adjustable high-pass and low-pass x-overs: 32 Hz – 320 Hz
Power/Ground terminals connector: 4 – 8 AWG
Speaker terminal connector: 12 – 16 AWG
Fuse size: 25 A x 2

Extra Information

10.00 LBS
Feature 1:
CLASS D EFFICIENT DESIGN – produces 325 Watts of maximum dynamic power at 50Hz x 1 channel @ 4 ohms , 565 Watts of maximum dynamic power at 50Hz x 1 channel @ 2 ohms and 690 Watts of maximum dynamic power x 1 channel at 50Hz @ 1 ohm
Feature 2:
RGB ILLUMINATION VIA BLUETOOTH APP – the Jensen DSP app allows you to have full control over your amplifiers various functions such as: Illumination, Remote Bass, Frequency, Volume & Gain
Feature 3:
LOW-PASS CROSSOVER & BASS BOOST – When constructing the Jensen mono amplifier, we added a low-pass variable crossover for versatility and a variable bass boost at 45Hz
Feature 4:
SHORT CIRCUIT PROTECTION – given the vast amounts of dynamic power in your mono amplifier we built-in a thermal DC offset safety protection
10.0000 lbs
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