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Jensen  JA4B

JA Series 4-Channel 740W Max Power Handling, Class-D Car Amplifier with Bluetooth App Control

Item #89468

Condition:   Brand New

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$94.99

Reg. Price $199.99  Save $105.00

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Jensen JA4B JA Series Class D 4-Channel Amp


We are a Jensen authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order!

What's Inside?
  • •4-Channel amplifier
  • •11" High-level input harness
  • •(4) Plastic spacers
  • •(4) 1-1/8" screws
  • •(4) Flat washers
  • •(4) Lock washers
  • •(2) Allen keys (4mm & 2mm)
  • •(2) Owner's manuals (Eng & Span)
High-quality Car Audio Equipment

Jensen has long been synonymous with high-quality car audio equipment, and the Jensen JA4B 4-channel amplifier is no exception. Engineered to deliver exceptional sound performance, the Jensen JA4B is a game-changer for car audio enthusiasts. The Jensen JA4B provides ample power for your car audio system, with 90 watts RMS per channel at 4 ohms. This versatile 4-channel amp allows you to connect multiple speakers and components, ensuring a well-balanced and immersive audio experience.

Precision and Reliability

Whether you enjoy crisp highs or deep bass, the JA4B offers the flexibility to cater to your unique audio preferences. Built with precision and reliability in mind, the Jensen JA4B is constructed with high-quality components to ensure durability. Its solid construction guarantees long-term performance, even in demanding conditions. Additionally, the amplifier features advanced circuitry for efficient power usage, maximizing performance while minimizing power consumption.

Hassle-free Installation

The Jensen JA4B is designed for hassle-free installation, making it accessible for professional installers and DIY enthusiasts. Its compact size and user-friendly interface allow a seamless integration into your vehicle's audio system. With clear instructions and intuitive controls, setting up the Jensen JA4B is a breeze.

  • Maximum Power : 740 Watts
  • Number of Channels : 4
  • Frequency Response : 20-20000 Hz
  • Built In Crossovers : Yes
  • RMS Power Output : 90 x 4 Watts
  • Amplifier Class : D
  • Fuse Rating : 50 A

Features:

  • RGB Custom color illumination
  • Class D design
  • 2 Ohm stable stereo operation
  • Bridgeable operation for subwoofer applications
  • 10 Band EQ (5 per channel)
  • Inputs: High (speaker wire) and Low (RCA) level
  • Adjustable high and lowpass crossovers: 32 Hz – 320 Hz
  • Adjustable high and low-pass crossovers: 32 Hz – 320 Hz
  • Continuous Power Output: 90W RMS x 4 Channels at 4?
  • 115W RMS x 4 Channels at 2?
  • 230W RMS x 2 Channels at 4? BRIDGED (1% THD+N)
  • Maximum Dynamic Power: 125W RMS x 4 Channels at 1kHz at 4?
  • 185W RMS x 4 Channels at 1kHz at 2?,
  •  365W RMS x 2 Channels at 1kHz at 4? BRIDGED (10% THD+N)
  • Signal to Noise: 70dBA reference 1 Watt RMS
  • THD+N: <0.15% at 1 Watt RMS from 20Hz to 20kHz
  • Frequency response: 20Hz - 20kHz
  • Amplifier dimensions: 2.16" x 8.38" x 5.59" (HxWxD)

 

Specifications:

  • RMS Power Output (Watts x Channels): 90 x 4
  • Peak Power Output (Watts x Channels): 125 x 4
  • Power at 2 Ohms (Watts x Channels): 115 x 4
  • Bridged Power (Watts x Channels): 230 x 2
  • Minimum Impedance Bridged: 4
  • Minimum Impedance Unbridged: 2
  • Minimum Impedance: 2
  • Best Frequency Response: 20Hz-20k Hz
  • THD at Rated RMS Power: 0.15%
  • Signal to Noise Ratio: 70 dB
  • Input Voltage: 14.4v
  • Amplifier Class: D
  • Low-Pass Crossover Frequency: 20-500Hz
  • Low-Pass Slope (dB/octave): 6, 12, 18 dB/octave
  • High-Pass Crossover Frequency: 20-500Hz
  • High-Pass Slope (dB/octave): 6, 12, 18 dB/octave
  • Bass Boost: Yes
  • Bass Boost Frequency: 45 Hz
  • Fan Cooled: No
  • Fuse Rating: 50
  • Speaker Level Inputs: Yes
  • Preamp Outputs :No
  • Width (inches): 8-7/16
  • Height (inches): 2-1/4
  • Depth (inches): 5-5/8
  • UPC: 10827204118891
  • Weight: 9
  • Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 2 Year(s) from the original date of purchase with proper return authorization.

Do you own this product?

Write a review!
  • Not really a huge of its DSP. Its a little bit limited for me. Its compact which is a plus nothing is really amazing with the amp.

    Robert S.
    3/19/2024

  • A compact amp with DSP features for less than 100 bucks? I really got tempted with this one and I had to try it out. Glad I went with my decision. The sound quality is good and the DSP is easy to use however finding the right tune can be a little bit time consuming.

    Jay Trent
    4/15/2024

  • While it doesn't offer many tuning options, it's still a pretty decent amp for the price. Sound quality is pretty okay. Its small footprint makes installation much easier.

    A. Reed
    6/6/2024

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