Jensen JA1B Class D Compact Mono Subwoofer Amplifier

Jensen JA1B Compact Class D Mono Subwoofer Amplifier with Bluetooth App Control

The Jensen JA1B Compact Mono Subwoofer Amplifier combines modern technology with over 90 years of Jensen expertise. It’s built to deliver clean, powerful sound in a compact, efficient form. Designed for listeners who want their audio to hit hard and stay crisp, it keeps setup simple and sleek.

App-Based Smart Control

No need to reach into the trunk to adjust your amp. The Jensen Amp App gives you full control via Bluetooth, letting you fine-tune gain, frequency, and volume right from your smartphone. You can also explore EQ presets for instant sound optimization and customize the amp’s RGB illumination to match your interior or mood.

Compact Size, Massive Output

Don’t underestimate its size—the Jensen JA1B’s Class D digital design delivers up to 595 watts of RMS power at 1 ohm, reaching up to 690 watts of maximum dynamic power at 1 ohm. It maintains clean, efficient performance at 4, 2, and 1 ohm loads with minimal distortion. Its micro circuitry and PWM MOSFET power supply ensure cool, stable operation even under demanding conditions.

Fine-Tuned Sound Control

Shape your sound precisely with an adjustable low-pass crossover (32 Hz–300 Hz) and variable bass boost at 45 Hz. Whether you want tight, punchy bass or deep, resonant lows, the JA1B adapts easily. A 68 dBA signal-to-noise ratio keeps the output clear and distortion-free.

Simple and Space-Saving Setup

Every detail is designed for convenience. The Jensen JA1B's intuitive side panel layout clearly labels inputs and outputs for straightforward installation. Measuring only 2.16" (H) x 9.56" (W) x 5.59" (D), the amp fits neatly into tight spaces while leaving plenty of room for gear.

Reliable, Tested Performance

Jensen prioritizes safety and dependability with built-in short circuit and thermal protection. The JA1B is also CTA-2006-D certified, ensuring its power ratings are independently tested and verified for accuracy and reliability.

Style That Matches Your Sound

With the Jensen Amp App, personalize your setup using a full-color RGB wheel. Choose subtle ambient lighting or bold color effects to match your car’s vibe. It’s a stylish finishing touch that enhances both look and feel.

Small Amp, Big Impact

The Jensen JA1B proves that great things come in small packages. Combining app-based control, efficient Class D power, and sleek design, it transforms your in-car audio experience. Expect every note—from crisp highs to deep lows—to sound intentional, powerful, and precise.

FAQs

1. What makes the Jensen JA1B stand out from other amplifiers? The JA1B combines Jensen’s classic audio quality with Bluetooth app control, allowing full access to tuning and illumination settings directly from your phone.
2. How powerful is the Jensen JA1B? It delivers up to 690 watts of maximum dynamic power at 1 ohm, offering consistent and clean performance across various load configurations.
3. Can I change the lighting on the Jensen JA1B? Yes, the RGB illumination can be customized using the Jensen Amp App, letting you choose colors that match your car’s interior or your personal style.
4. Is the JA1B a good choice for smaller vehicles? Definitely. Its compact Class D design and micro circuitry make it perfect for installations where space is limited without compromising power.
5. Does the amplifier include protection features? Yes, it comes with built-in short circuit and thermal protection to ensure safe, reliable operation during every drive.