Overview
The MAD AMPX 40A Pro ESC is an advanced electronic speed controller designed to support 2-6S Battery configurations, offering superior performance for your drone. It has a continuous current rating of 40A and can handle an instant current of up to 60A under good cooling conditions. With its adaptive and intelligent auto-adjusting timing, the AMPX 40A Pro is compatible with a wide range of motors, particularly MAD motors, ensuring optimal throttle response and minimal signal interference. It supports various flight controllers with a signal frequency of 600Hz and higher, providing reliable control for your drone's motors.
Key Features
- Core Software: Improved throttle response with optimized ESC software.
- Compatibility: Works seamlessly with MAD motors and other motors with more poles.
- Signal Crosstalk Reduction: Enhanced signal transmission with reduced crosstalk.
- Calibration: Throttle range calibration supported for easier setup.
- Wide Compatibility: Supports a variety of flight controllers with signal frequencies above 600Hz.
- Battery Support: Compatible with 2-6S battery sections, recommended 6S batteries for optimal performance.
ESC Connection
- Battery Connection: Rechargeable battery connection.
- Throttle Signal: Connects to throttle signal for motor control.
- Receiver: Receives signals from the transmitter to control motor speed.
- Motor: Powers the motor for propeller rotation.
- UBEC: Used for voltage regulation.
Parameter Table
Model | AMPX 40A Pro |
---|---|
BEC | No |
Continuous Current | 40A (under good cooling conditions) |
Instant Current | 60A (under good cooling conditions) |
Input Connectors | No |
Output Connectors | 3.5mm Gold Connectors (Female) |
Battery Section | 2-6S |
Recommended Battery | 6S |
Throttle Range Calibration | Supported |
DEO | Not Supported |
Timing | Auto-adjusting |
Dimensions | 66 x 20 x 10 mm |
Weight | 22g |
AMPX 40A-A | Power cable: 75mm, Motor cable: 75mm, signal cable: 75mm |
AMPX 40A-B | Power cable: 75mm, Motor cable: 75mm bullet connectors, signal cable: 75mm |
AMPX 40A-C | Power cable: 500mm, Motor cable: 3.5mm bullet connectors, signal cable: 800mm |
Trouble Shooting Guide
-
Problem: The ESC was unable to start the motor.
- Warning Tone: "Beep beep beep..." (Rapid motor beeping)
- Possible Cause: Throttle stick is not in the bottom position.
- Solution: Move throttle stick to the bottom position or recalibrate throttle range.
-
Problem: The ESC was unable to start the motor.
- Warning Tone: "Beep, beep, beep..." (Time interval is 1 second)
- Possible Cause: No output signal from throttle channel on the receiver.
- Solution: Ensure the transmitter and receiver are bound properly. Check throttle wire connection.
-
Problem: Voltage is less than 16V.
- Warning Tone: "Beep beep beep..." every 1 second.
- Possible Cause: Battery voltage is too low.
- Solution: Change to a fully charged battery.
Disclaimer & Attention
- This product is designed for drone enthusiasts with knowledge of electrical components. Please ensure that all components are in good condition before use. High-speed running propellers may pose a safety risk, and the user should be experienced and ensure proper handling.
Details

AMPX 40A ESC offers multi-protection and enhanced security. It supports continuous current of 40A and instant current of 60A, compatible with 2-6S batteries. Features include improved throttle response, compatibility with MAD motors, adaptive settings, crosstalk reduction, and wide flight controller support. Connection diagram and throttle calibration instructions are provided.

The AMPX 40A Pro ESC supports 2-6S batteries, with a continuous current of 40A and instant current of 60A. It features auto-adjusting timing, gold connectors, and various cable lengths. Troubleshooting covers motor start issues, voltage problems, and overheating. Users must be over 18 and check components before use.