Reflex Adapt

Reflex Adapt

MiSTer Addons
Regular price $50.00
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Introducing Reflex Adapt: a revolutionary gaming device with the power to provide ultimate control. With minimal latency, input response times are improved, empowering gamers to respond faster to unpredictable changes and take on even the most dynamic gaming challenges. Experience gaming with a responsiveness never seen before, and take your gaming to the next level!

Uses your existing HDMI style controller adapters to work with a buttload of different accessories, all over USB!

How does it work?

Connect your controller to the HDMI-style controller adapters, then insert the HDMI adapter into the Reflex Adapt. Finally, connect the Reflex Adapt into your PC, MiSTer, or PS3.

Why does latency matter?

Latency is a key component in gaming, even if you can't detect it. When a button is pressed, the controller transmits the data to the console/computer, which verifies inputs in separate phases. The speed of the controller adapter is integral, as it increases the likelihood of the button press registering within the same polling cycle (same frame). Most Reflex Adapt modes have 90% or higher same frame probability, with the remainder being 80%+. In comparison, standard wired USB controllers are 65% likely and Bluetooth controllers are 5% likely. Reflex Adapt all but eliminates input latency, and boasts a native 1ms polling interval.


  • Lightning fast 0.84 ms to 2.92 ms average latency across all modes. That’s 2-8x faster than most usb controller converters, 5x faster than most native usb controllers and 15x faster than most wireless controllers.
  • Native 1ms polling on PC, and MiSTer!
  • USB Direct Input device compatible with Windows, Linux, MiSTer, and Steam Deck!
  • Switch and Xinput modes in development and coming soon!
  • OLED screen indicates controller mode, shows per-port controller detection, and provides live feedback of the inputs as they are pressed
  • Change modes with a press of a dedicated button - multiple modes can be stored simultaneously (up to memory capacity - typically 3-5 modes)
  • Individual mode input mapping on MiSTer (no shared mappings between modes)
  • Custom software updater - works on PC, Linux, Mac, and even your MiSTer
  • Open source firmware by Sonik
  • Compatible with many devices with more possible in the future

Supported Modes:

  • NES + SNES + Virtual Boy (2P)*
  • Genesis + Saturn (2P)*
  • PSX (2P) / GunCon (1P) / neGcon (1P) / JogCon (1P)**
  • Neo-Geo (1P)
  • PC-Engine (2P)
  • 3DO (6P?)***
  • Jaguar (1P)
  • N64 (2P)
  • GameCube (2P)
  • Wii Classic (1P)
  • Sega Master System, Atari 2600, Commodore 64 and Amiga (2P, digital pads)
  • FM Towns, MSX, X68000 and PC-88/PC-98 (2P, digital pads)

* Any combination of these supported controllers

** Each mode is separate (no mixing)

*** Only 3 controllers tested so far but theoretically 6 can be used


  • Reflex Adapt Device
  • Premium 3 meter braided USB C to USB A cable

Reflex Adapt vs SNAC/SNAX?

SNAX has one advantage over Reflex Adapt: zero latency. Reflex adapt has 0.0007 to 0.003 seconds of latency. The only devices that won't work with Reflex Adapt are light guns and peripherals like memory cards.

Feature Reflex Adapt SNAX
Connectivity USB MiSTer SNAC
Devices Supported MiSTer, PC, PS3 MiSTer
HDMI Controller Adapters Yes Yes
Required Port Any USB port User IO Port
Latency (in seconds) 0.0007-0.003 0
Light Gun Support GunCon1 as USB (1P) Core-native light guns
Rumble Not currently Yes (PSX currently)
Memory Cards No Yes
Navigate MiSTer Menu Yes No
Any Controller with Any Core Yes No
OLED Controller Display Yes No
2 Player Support NES, SNES, Virtual Boy, Genesis, Saturn, PCE, N64, GameCube, 3DO NES, SNES, PSX, and N64 (WIP)
Multitap SNES, Genesis, Saturn, 3DO (controller chaining) SNES, PSX, Saturn (WIP)


Windows/MacOS/Linux Firmware Updater:

  • Download and unzip the latest Reflex Updater release here

  • Run the executable for your operating system:
    • Windows: reflex_updater.exe
    • MacOS: reflex-macos
      • Make sure you allow the untrusted code in System Preferences > Security, then run it again and acknowledge the warning again
    • Linux x86 64bit: reflex-linux-x86_64
    • Linux ARM: reflex-linux-armv7
  • Select the desired firmware combo from the list and press enter
  • Press the "RESET" button on Reflex Adapt when prompted
  • Close the updater software

MiSTer Setup:

  • Copy the script to the “Scripts” folder of your MiSTer’s SD card 
    • Modify your sd card's MiSTer.ini file(s)
        • CRT users, make sure you can see the output of scripts on your CRT or the updater won't work with one of these options:
          • Option 1: fb_terminal=0
          • Option 2: add these to MiSTer.ini to scale your Menu core to 15kHz (won't display on HDMI)
            • [Menu]
            • video_mode=480,12,48,36,240,4,3,16,9089
            • vga_scaler=1
      • Run on your MiSTer by selecting it in the Scripts menu
      • Run your preferred MiSTer updater to download the Reflex Adapt mappings



          Discussion and Bug Reporting:

          Discussion on my Discord Server

          Bug reporting on Github Issues

          Source code and firmware updater:

          Customer Reviews

          Based on 38 reviews
          A Power User's Kind Of Adapter

          Works flawlessly for all digital game pads, N64 and PSX also works great minus Rumble capabilities. As what I was told, XInput drivers are on the way to add more functionality down the road.

          Rafał Marchewka

          Reflex Adapt

          Nick Goebel
          The Last Adapter You'll Need

          The Reflex Adapt has been great at handling whatever I've thrown at it, and with more than enough options to configure it to do exactly what I need. The OLED display on it has been especially nice for quick controller testing, too! But honestly, my favorite thing is that I can switch it between my MiSTer and PC without any hassle whatsoever (others have given me some driver issues on W10). I've tried a good handful of other adapters, but I don't see myself going back to them any time soon.

          must have for controller enthusiasts

          many retro gamers have a bin full of their old classic controllers. this device lets you use them again.
          currently still works on xbox with a brook wingman xb2. even if xbox drops support, it is not the fault of the reflex adapt.
          another fun use to check out is a gamecube controller on the n64 core.
          5 stars

          Chris B.
          Reflex Adapt worth it

          Really cool. Was fairly easy to set up for my MiSTer. I am currently using PS1 controllers and has this far worked pretty well with the additional adapter plug. Something they should tell us is for 4 player PS1 games you can in fact use two reflex adapts and use all 4 of the controllers. You can also mix and match. I can use any combo of PS1 controllers or wired 8bitdo usb controllers at the same time as well. Something to note that I learned the hard way: if one of your controllers is broken or worn out to where it’s not usable, neither controller plugged into the same reflex adapt will send a signal or register that it’s there correctly. 10/10 would recommend