Jensen JA1B
CTA-rated mono amp with Bluetooth app lighting and crossover control
$149.99
Overview
The Jensen JA1B is a Class D mono amplifier with CTA-2006-D certification, RGB illumination, and Bluetooth app control. It accepts high-level and RCA inputs, offers an adjustable low-pass crossover from 32 Hz to 300 Hz, and lists 690 W total dynamic power with RCA pass-through for daisy-chaining. Frequency response is listed 20 Hz–300 Hz with 68 dBA SNR. Pair it with a compatible subwoofer and an adequate power wire kit. Phone app features need Bluetooth pairing.
Product details
Mono Class D power
Built for subwoofer duty with Class D efficiency, variable gain (200 mV–6 V), and a 20 Hz–300 Hz frequency response window suited to bass systems.

App-managed RGB
The Jensen AMP app (Apple/Android) adjusts RGB illumination and amp setup over Bluetooth so lighting matches the rest of the cabin.

Flexible inputs
High-level speaker-wire and low-level RCA inputs cover factory and aftermarket sources, with RCA pass-through for daisy-chaining.
Key features
- Class D mono amplifier
- CTA-2006-D certified
- Jensen AMP app control (Apple/Android)
- RGB custom color illumination
- High-level and low-level (RCA) inputs
- Adjustable LPF 32 Hz – 300 Hz
- Frequency response 20 Hz – 300 Hz
- Signal-to-noise 68 dBA
- RCA pass-through outputs
- Variable gain 200 mV – 6 V
Specifications
| Weight | 6 lbs |
|---|---|
| Dimensions | 9.56 × 5.59 × 2.16 in |
| Channels | Mono |
| Brand | Jensen |
| Model | JA1B |
| SKU | JA1B |
| UPC | 827204118870 |
| Product type | Mono amplifier |
| Channels | Mono |
| Class | D Digital |
| CTA-2006-D | Certified |
| Total dynamic power | 690 W |
| Frequency response | 20 Hz – 300 Hz |
| Crossover | LPF 32 Hz – 300 Hz |
| SNR | 68 dBA |
| Inputs | High level, RCA |
| Outputs | RCA pass-through |
| Gain | 200 mV – 6 V |
| Illumination | RGB |
| App control | Yes |
Important notes
- Proper gauge power, ground, and fuse required (wiring kit sold separately)
- Match subwoofer impedance and power to the amp’s ratings before finalizing
- App features require a compatible phone with Bluetooth
- Professional installation recommended
What's in the box
- Jensen JA1B mono amplifier
- Accessories as packaged



