GEPRC Fettec G4 Alpha GF50A STACK

The GEPRC Fettec G4 Alpha GF50A Stack is a premium, high-performance flight system born from a unique collaboration between GEPRC and FETTEC. Moving away from traditional STM32F4/F7 Betaflight architectures, this stack leverages a powerful STM32G473 main processor running the highly optimized, closed-source FETTEC Alpha firmware.

Paired with the GF50A 4-in-1 ESC, it utilizes ultra-fast S2M and Dshot2400 control protocols to deliver unmatched stability and lightning-fast tracking response. The specialized software ecosystem provides exceptional flight resilience, maintaining smooth control even under extreme conditions, such as bent propeller blades following a crash.

Features

Driven by specialized FETTEC Alpha flight controller firmware and FETTEC ESC architecture

Supports ultra-high-speed S2M, S2M+OW, and Dshot2400 communication protocols

Full solderless layout with all interfaces supporting plug-and-play SH1.0 connector cables

Versatile two-in-one analog and digital interface, fully compatible with DJI Digital VTX platforms and traditional analog setups

Exceptional hardware resilience against complex flight conditions and desyncs caused by damaged props

Independent dual BEC system providing 9V@2A and 5V@2A outputs

GEPRC Fettec G4 Alpha Flight Controller Specifications

MCU: STM32G473CEU6

IMU: IIM-42602

Firmware: FETTEC ALPHA

OSD: FETTEC OSD

Buzzer & LED Pads: Supported

USB Interface: Type-C

BEC Output: 5V@2A (2.5A Max) and 9V@2A (2.5A Max) dual independent outputs

Weight: 6.6 g

GEPRC Fettec GF50A 4IN1 ESC Specifications

MCU: STM32G071

Continuous Current: 50A

Burst Current: 55A

Input Voltage: 2-6S LiPo

Protocols Supported: S2M+OW, S2M, Dshot300–Dshot2400

Current Sensor (Galvanometer): Supported

Firmware: FETTEC

Dimensions: 32×32 mm

Mounting Pattern: 30.5×30.5 mm (M4 holes)

Weight: 13 g

Package Contents

1 x GEPRC Fettec G4 Alpha Flight Controller board

1 x GEPRC Fettec GF50A 4IN1 DShot2400 ESC board

1 x 35V 1000μF capacitor

1 x XT60 power cable (110mm)

2 x SH1.0 4-Pin silicone cables (100mm)

1 x SH1.0 6-Pin to SH1.0 7-Pin silicone cable (60mm)

1 x SH1.0 8-Pin silicone cable (30mm)

1 x SH1.0 7-Pin to 6-Pin silicone cable (80mm)

4 x M324 hex socket screws

4 x M3 transparent nylon nuts

10 x M38 silicone dampening grommets

1 x User manual