1. Introduction
This BLAUPUNKT 4-channel car amplifier is a high-quality audio amplifier designed to provide exceptional sound quality and power to your car audio system. Its 4-channel design allows connection and distribution of audio signals to four speakers or subwoofers, ensuring a complete audio experience. With a max power output of 1500 watts (150 watts x 4 at 4 ohms), this amplifier delivers powerful and clear sound, ensuring you hear every detail of your music. It also features a built-in bass boost function, allowing you to adjust the bass level to your preference for a richer and deeper sound.

2. Safety Information
Please read all instructions carefully before installation and use. Keep this manual for future reference. Always disconnect the vehicle's battery before making any electrical connections. Ensure proper grounding to prevent electrical hazards. Avoid exposing the amplifier to moisture or extreme temperatures. Professional installation is recommended for optimal performance and safety.
- Do not operate the amplifier if it has been exposed to water or moisture.
- Ensure adequate ventilation around the amplifier to prevent overheating.
- Use appropriate gauge wiring for power and speaker connections as specified in the installation section.
- Protect all wiring from sharp edges and moving parts.
3. Package Contents
Verify that all items are present in the package:
- BLAUPUNKT AMP1504PRO Amplifier
- User Manual (this document)
- Mounting Hardware (screws, washers)
- Warranty Card (if applicable)
4. Features
- Max Output Power: 1500 Watts / RMS Power (2 ohms): 300 Watts X 4 / RMS Power (4 ohms): 150 Watts X 4
- Engineered to be the most efficient car multichannel amplifier in its class, maximizing your vehicle’s electrical system output.
- Integrated high-pass and low-pass filters on the rear panel allow precise crossover frequency settings between subwoofers and speakers.
- MOSFET pulse width modulated power supply and proprietary heat dissipation design ensure the amplifier runs cool, even during demanding use.
- Class AB amplifier design significantly reduces power loss, making it highly efficient. Excess energy is stored until needed, rather than being converted into heat, leading to reduced size/weight, less power waste, a smaller heat sink, and compact circuitry.
5. Specifications
| Feature | Detail |
|---|---|
| Brand | BLAUPUNKT |
| Model Number | AMP1504PRO |
| Max Output Power | 1500 Watts |
| RMS Power (2 ohms) | 300 Watts x 4 |
| RMS Power (4 ohms) | 150 Watts x 4 |
| Voltage | 12 Volts (DC) |
| Maximum Supply Voltage | 12 Volts (DC) |
| Mounting Type | Surface Mount |
| Package Dimensions | 15.25 x 8.5 x 3 inches |
| Item Weight | 5.7 Pounds |
6. Setup and Installation
Proper installation is crucial for optimal performance and safety. It is highly recommended to have this amplifier installed by a qualified professional. Below are general guidelines for connection points.
6.1 Power Connections
- GND (Ground): Connect to a clean, unpainted metal surface of the vehicle chassis. Ensure a solid connection.
- REM (Remote Turn-On): Connect to the remote output of your head unit. This turns the amplifier on/off with your car stereo.
- +12V (Power): Connect directly to the positive terminal of your vehicle's battery. Use an appropriate inline fuse (not included) as close to the battery as possible.
6.2 Audio Input/Output Connections
- Input FL/FR/RL/RR: Connect RCA cables from your head unit's pre-amp outputs to these inputs.
- Speaker Outputs (RL/RR/FL/FR): Connect your speakers to these terminals. Ensure correct polarity (+ to + and - to -). This amplifier supports 4-channel, 3-channel (bridged), or 2-channel (bridged) configurations.


6.3 Mounting
Mount the amplifier securely in a location that allows for adequate ventilation and is protected from moisture. Avoid mounting on carpeted surfaces or in enclosed spaces without airflow.
7. Operating Instructions
The BLAUPUNKT AMP1504PRO features various controls to fine-tune your audio experience.
7.1 Control Panel Overview

7.2 Adjusting Settings
- Gain Control: Adjusts the input sensitivity of the amplifier to match the output of your head unit. Start with the gain at minimum and slowly increase until desired volume is achieved without distortion.
- HPF (High-Pass Filter): Filters out low frequencies, typically used for full-range speakers to prevent distortion from bass. Adjustable from 60Hz to 1.2kHz.
- LPF (Low-Pass Filter): Filters out high frequencies, typically used for subwoofers to ensure only bass frequencies are played. Adjustable from 50Hz to 400Hz.
- Bass Boost: Provides an adjustable bass enhancement (0dB to 12dB) at 50Hz. Use sparingly to avoid distortion.
- Mode Switch: Selects between Full, HPF, or LPF operation for each channel pair.
7.3 Product Overview Video
For a visual guide on the amplifier's features and appearance, please watch the official product video below.
8. Troubleshooting
If you experience issues with your amplifier, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No Power / Amplifier Not Turning On | Blown fuse, loose power/ground connection, no remote signal. | Check inline fuse and amplifier fuses. Verify all power, ground, and remote wire connections are secure. Ensure head unit is providing remote signal. |
| No Sound Output | Loose RCA cables, incorrect input/output connections, speaker wires disconnected, amplifier in protection mode. | Check RCA connections at both amplifier and head unit. Verify speaker wire connections and polarity. Check amplifier status indicator for protection mode. |
| Distorted Sound | Gain set too high, improper filter settings, poor quality audio source. | Reduce gain setting. Adjust HPF/LPF settings. Ensure audio source is clean and not overdriven. |
| Amplifier Overheating | Insufficient ventilation, impedance too low, prolonged high volume use. | Ensure amplifier has adequate airflow. Check speaker impedance to ensure it matches amplifier's capabilities. Reduce volume or allow amplifier to cool. |
If the problem persists after attempting these solutions, please contact BLAUPUNKT customer support or a qualified car audio technician.
9. Maintenance
To ensure the longevity and optimal performance of your BLAUPUNKT amplifier, follow these simple maintenance tips:
- Keep the amplifier clean and free from dust and debris. Use a soft, dry cloth for cleaning.
- Periodically check all wiring connections to ensure they are secure and free from corrosion.
- Ensure the amplifier's cooling fins are not obstructed to maintain proper heat dissipation.
- Avoid spilling liquids on the amplifier.
10. Warranty and Support
BLAUPUNKT products are designed and manufactured to the highest quality standards. For information regarding warranty coverage, technical support, or service, please refer to the warranty card included with your product or visit the official BLAUPUNKT website. Keep your proof of purchase for warranty claims.
For further assistance, you may contact the seller, Audio 360, through the Amazon platform or refer to the BLAUPUNKT brand store for more resources.
BLAUPUNKT Official Website: www.blaupunkt.com
BLAUPUNKT Amazon Store: Visit Store





