Atlona > Products > Switchers > Matrix Switchers > HDMI > Atlona 6 x 6 HDMI to HDBaseT Matrix Switcher

Atlona 6 x 6 HDMI to HDBaseT Matrix Switcher


Model Number: AT-PRO3HD66M

Focused design: Atlona’s PRO3HD66M affordably routes and extends 1080p video and multi-channel audio to as many as six displays up to 230 feet (70 meters) away. HDBaseT, power over category cable (PoCc), and complete control.

View an Atlona system diagram to see PRO3HD66M at work in a sophisticated, media-driven boardroom or impressive connected home

Recommended Receivers:
AT-PRO3HDREC - IR, RS-232, PoCc, audio, and video
AT-HDRX-IR - Don't need RS-232? IR, PoCc, audio, and video
AT-HDWP-IR - Wall plate with IR, PoCc, audio, and video
AT-HDWP-IR-UK - UK wall plate with IR, PoCc, audio, and video
AT-HDRX - Don't need control? PoCc, audio, and video
AT-HDWP - Wall plate with PoCc, audio, and video
AT-HDWP-UK - UK Wall plate with PoCc, audio, and video


  •   Overview
  •   Specifications
  •   Related
  •   Application
  •   Documentation
  •   Video
  •   FAQ
  •   Control
  •   Firmware
Delivers More
More affordable routing and extension, more reliably. Extends six sources to six HDBaseT outputs and two mirrored HDMI outputs for impressive, immersive audio and video in multiple spaces simultaneously.

Low-Stress, High-Performance AV
Great AV with easy setup. Get 1080p, 3D, deep color, and surround sound where you want it, when you want it.
HDMI or S/PDIF digital audio outputs sends multi-channel audio to an AV receiver or zone amplifier. Get highest-quality sound, like Dolby TrueHD and DTS-HD Master Audio, without added cables or outlets.

230-Feet, 70-Meter Distance
Get HD video, multi-channel audio, control, and power up to 230 feet (70 meters) over a single category cable.

Easy, Complete Control
Easily control the matrix via TCP/IP, RS-232, and GUI. Works with most major control systems. Bidirectional IR allows control of display and source through the same interface.
  • Bi-directional IR
  • Bi-directional RS-232
  • TCP/IP with GUI
Compatible Control Systems:
AMX      Control4      Crestron
Elan      Neets          On Controls
RTI       URC
For drivers, please see the Control Drivers tab.

Look Ma, No AC!
PoCc extends power to receivers up to 230 feet (70 meters) over a single category cable. Use PRO3HD66M to power up to six receivers at once.
Purchase an optional redundant power supply (AT-PW24V6.25A) to guarantee reliability.

The Most Beautiful Extender You’ve Never Seen
Atlona PRO3HD66M is designed to work with Atlona wall plate receivers for clean, elegant installation behind a TV display.
AT-HDWP-IR - Wall plate w/IR, PoCc, audio, and video
AT-HDWP-IR-UK - UK wall plate w/IR, PoCc, audio, and video
AT-HDWP - Wall plate w/PoCc, audio, and video
AT-HDWP-UK - UK wall plate w/PoCc, audio, and video

Control Partners


Product Review

“Overall, the AT-PRO3HD66M is a versatile switcher that would function well in both residential and commercial markets. The ability to have different configurations, different types of outputs, and different types of HDBaseT receivers makes this product extremely open ended.”

Patrick Barron,

Sound & Video Contractor
click here to read full review



  Video 480i@60Hz, 480p@59.94/60Hz, 576i@50Hz, 576p@50Hz, 720p@50/59.94/60Hz, 1080i@50/59.94/60Hz, 1080p@23.98/24/25/29.97/30/50/59.94/60Hz
  VESA 640x480@60Hz, 800x600@60/75Hz, 1024x768@60/75Hz, 1280x768@60/75Hz, 1280x800@60Hz, 1280x1024@60/75Hz, 1366x768@60Hz, 1400x1050@60Hz, 1440x900@60/75Hz, 1600x900@60Hz, 1600x1200@60Hz, 1680x1050@60Hz, 1920x1200@60Hz
  Colorspace RGB, YCbCr 4:4:4, YCbCr 4:2:2 (8-bit only)
  Color depth 8-bit, 10-bit, 12-bit
  Formats PCM 2Ch, LPCM 5.1, LPCM 7.1, Dolby Digital, DTS 5.1, Dolby Digital+, Dolby TrueHD, DTS-HD Master Audio
  Sample Rate 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz
  HDMI IN up to 15 meters (@1080p 8-bit) up to 50 feet
  HDMI OUT up to 15 meters (@1080p 12-bit) up to 50 feet
  CAT5e/6 up to 60 meters up to 197 feet
  CAT6a/7 up to 70 meters up to 230 feet
  Bandwidth 6.75 Gbps
  CEC No
  HDCP Compliant
  Fan Noise
  SPL 28dBA
  Operating 0°C to 40°C 32°F to 104°F
  Storage -20°C to 60°C -4°F to 140°F
  Humidity 20 to 90% non-condensing
  Consumption 90W
  Idle Consumption 6.1W
  Supply Input: AC100~240V 50/60Hz
Output: DC 24V/5A
  H x W x D 87.95 x 433.8 x 280 (mm) 3.46 x 17.08 x 11.02 (inch)
  W/feet 97.85 x 433.8 x 280 (mm) 3.85 x 17.08 x 11.02 (inch)
  Rack Unit 2
  Device 4.38kg 9.66lbs
  Shipping 8.24kg 18.16lbs
  Power Supply CE, FCC, RoHS, cULus


  Features 3D, 1080p, 1920x1200, Dolby TrueHD, DTS-HD Master Audio
  Features 3D, 1080p, 1920x1200, Dolby TrueHD, DTS-HD Master Audio
  HDBaseT PoCc, RS-232, IR, 3D, 1080p, 1920x1200, Dolby TrueHD, DTS-HD Master Audio
  Compatibility Mono to mono IR cables or Atlona IR receiver
  Compatibility Atlona IR emitter only
  Audio Formats PCM 2Ch, LPCM 5.1, Dolby Digital, DTS 5.1
  Use Firmware updating

Package Contents

QTY   Item
1   AT-PRO3HD66M
1   24V DC power supply adaptor
1   Power cord
1   IR receiver module
7   IR emitter
1   Remote control
1   Pair of dual purpose wall/rack mount ears
1   User manual


PRO3HD66M IR w/3RD Party Control System

The PRO3HD66M has zone dedicated IR ports for controlling sources and displays. Using a 3rd party control system (as shown in diagram) or IR Remote Control to control all connected devices

   • 7 IR Emitters and 1 IR Receiver are included with the PRO3HD66M
   • Control any IR display using a 3rd party control system.
   • Control any IR source using an IR remote control and the included Emitters, such as blu-ray players, satellite boxes, etc.

PRO3HD66M RS-232 w/3RD Party Control System

Control any RS-232 device in your home with pass through support to any zone. Use a 3rd party control system (as seen in diagram) or a computer to send commands to any device.

   • Use with the PRO3HDREC to pass RS-232 commands to any display, such as a projector

PRO3HD66M use in any large classroom, conference room or military briefing room with teleconferencing

With multiple ports and pass through ability for up to 1080p and 1920x1200 the PRO3HD66M is great for almost any environment

   • Use with scalers or receivers to get even further distance, such as AT-HDVS-RX (as seen in diagram)
   • Use a variety of receivers to get just what you need (Audio & Video, IR, or RS-232), such as AT-PRO3HDREC, AT-HDRX, AT-HDRX-IR, AT-HDWP, etc

 Declaration of

 CAD files

AT PRO3HD66M Basic Features
Matrix EDID Management
  Is there a recommended Telnet client to use with the new switches?
  Popular clients such as Putty and TeraTerm work freely with the new built-in telnet services.

  Which port number does Telnet use? Is it the same as SSH?
  Use standard port 23 for telnet control. SSH (port 22) is not implemented.

  Can I lock down remote access/control?
  Yes, both the web and telnet services can be password protected.

  Why can't I control the PRO3 Matrix when it is plugged into HDMI 1 + 2 on the B&O TV but I can control my sources?
  There is a conflict between PUC signal and HDMI signal when using HDMI 1 + 2 input on B&O TV. Please use HDMI 3/4/5 input on B&O TV instead.

AT-PRO3HD66M Control Drivers

AMX RS-232 and TCP/IP Control
File Size 327 KB
Date 06.25.13

*SDDP Enabled*

Control4 IR Control
File Size 3 KB
Date 06.11.13
Control4 RS-232 Control
File Size 63 KB
Date 06.11.13
Control4 TCP/IP Control
File Size 69 KB
Date 10.28.14

Crestron RS-232 and TCP/IP Matrix Control
File Size 3468 KB
Crestron RS-232 and TCP/IP Matrix & Zone Control
File Size 3856 KB
Date 06.25.13

Elan Available through Elan
Date 08.16.13

Neets IR, RS-232, and TCP/IP Control
File Size 50 KB
Date 06.11.13

On Controls On Controls Web based control
Date 06.11.13

RTI RS-232 and TCP/IP control
File Size 480 KB
Date 1.28.14

Universal Remote Control CCP Accelerator RS-232 Control
File Size 2 KB
Date 08.08.13

Vantage Driver Vantage
Date 07.16.14

AT-PRO3HD66M Firmware

Download Firmware version 2.0.09
File Size 208 KB
Date 10.18.13

Update 2.0.09 Includes

  • Fixed double IP feedback issue
  • New WebGUI for setup and control
  • DHCP default on
  • SDDP support for Control4 integration