Emax F4 Magnum AIO FPV Stack Version 2

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Emax “F4 Magnum” All in One FPV Electronics Stack

Please Note: Set Current scale on Betaflight to 240 for better results on Mah draw.


Building a high performance FPV quadcopter for racing or freestyle has never been easier.


This tightly integrated systems packs the FC, ESC, RX, VTX, PDB, CURRENT SENSOR and OSD into neatly stacked boards that can be easily serviced or upgraded. The pinned board interconnects offer a clean wire free look and the compact stack can fit even the tightest builds with easy.


We have carefully combined some of the best FVP technology in our arsenal into a tightly pre-assembled package that offers the fastest way go from starting a new build to FPV Flight!


6 in 1 Main Board - F4 FC + Betaflight OSD + LC Filter + 5v Regulator + Blackbox + Buzzer  

The heart of the flight control systems is a powerful STM32F405 MCU and MPU6000 gyro flashed with Betaflight for proven rocksteady flight stability. The integrated LC filter with 5v/3A voltage regulator means clean power for all the FC/OSD components and other attached boards such as VTX, RX and FPV Camera. Betaflight OSD with easily customizable layout of vital flight information and ability to change FC flight parameters. Blackbox flight log recorder with 16mb flash memory. On board buzzer for battery level warning or lost model finder functions.



48 Chanel 5.8ghz Switchable Power VTX Board

VTX allows for easy change of vtx channel/band via push button.  Also transmit power is switchable from 25mw to 200mw. Included is a lightweight 5.8ghz dipole whip antenna or 80mm extension cable with SMA connecter for use with your own antenna.


Frsky XM 16ch Sbus Micro RX Board

Genuine FrSky XM receiver is included with 16 channels (capable of RSSI function with software update from Frsky). It possible to connect other brands of Serial or PPM via the dedicated RX pads.


Bullet 30A - 4 in 1 ESC + Current Sensor Board


The ESC system is comprised of 4 x 30A continuous Bullet ESC’s using top quality MOSFETs and running Blheli S firmware. Your choice of protocol: DSHOT, Multishot, Oneshot 125. The onboard current sensor monitors mAh consumed and pass the information to OSD for an accurate way to monitor battery level and peak power consumption. 

Emax F4 Magnum AIO FPV Stack

Instruction Manual: CLICK HERE




6 in 1 Main Board
Flight controller OMNIBUSF4 Firmware
MPU6000 accelerometer/gyro (connected via SPI)
On-board Betaflight OSD
On-board Buzzer
Integrated 5V/3A BEC
Integrated LC Filter
Dedicated PPM/ Sbus receiver input
On-board high-capacity 16mb black box flight log recorder

3 UART pads

Addressable LED pad

VTX Board
Frequency band:5362-5945MHz
Channels: 48 ( Need band/channel chart )
Transmit power:Switchable 25/200mw
Supply voltage:4.5V-5.5V
Antenna port :50Ω ipx ufl connector

Antenna: 1pc lightweight 5.8g dipole 100mm whip

               1pc. SMA extension 80mm length

4 in 1 ESC and Current Sensor Board
Continuous current 30A and 40A burst per motor
Supply voltage 2-4S Lipo
Silabs EFM8BB21F16G 50mhz MCU
BLHeli-S firmware

Top quality MOSFET (Brand)
3oz high TG PCB board
On-board current sensor

Receiver Board
Genuine FrSky XM+ receiver

D16 Mode

16 channel SBUS

RSSI on Channel 15






5 Reviews Hide Reviews Show Reviews

  • 5
    Great stack, great price, great performance!

    Posted by Nick M on Apr 11th 2018

    I recently completed a 3" build, and while pricing components I found that this stack was in stock and the price was hard to beat given the specs. The build was super simple, compact, and clean. The performance out of the box was superb with stock PIDs. It isn't listed on the page, but EMax is also including a low ESR capacitor with the kit now. I had a crash that broke mine off, and I haven't been bothered by video noise enough to replace it. On a larger quad with bigger motors it might be necessary, but with RS1306 4000kv motors the noise minimal at worst.

    I will definitely purchase another one of these stacks for my next build, and I can't wait to see what V3 looks like! Keep up the good work!

  • 5
    Great performance and easy to build!

    Posted by Nick Myers on Mar 5th 2018

    I bought one of these stacks to use in a 3" build. It was a tight fit, but everything went together without any trouble and looks super clean. EMax doesn't list it in the product guide, but they're including a low ESR capacitor in the box now, too. This is a great product, and I can't wait to see what V3 looks like!

  • 5
    Heck yeah

    Posted by DMANIAK on Jan 20th 2018

    Very impressive stack, super clean, easy to install and very minimal tuning. Flys amazing straight out the box, with minor rate and expo changes needed to suit your flying style. Since I started using this stack my flying and video flow so smoothly. On my 2nd stack now on a second build and about to do a 3rd one. Lots of people are downing these stacks, I and some friends using them have never had any issues. I have literally decapitated my quad and ripped the stack off the quad into 2 pieces, resulting in the pins connecting the sec to flight controller off both boards. I got some wire and solder each section from one board back to the other and it still flys like a champ. So from that experience alone, totally convinced me that this is a high quality stack.

  • 4
    Good All-in-1 stack

    Posted by Steve Houser on Dec 29th 2017

    This a good all in one stack fir tight builds. I have had some trouble with the esc board and needed replacement. Support is good and I would recommend them. The only drawback is the receiver does not support sbus telemetry for the taranis.

  • 5
    Easy to build, compact, and cheap!

    Posted by Austin Wright on Oct 27th 2017

    For the money this is one of the best AIO stacks out there! Great parts in the stack and a compact build at a fair price point