ISS 608 New

True Seamless 4K/60 HDMI and DisplayPort Switcher
Key Features
  • True seamless switching between eight digital inputs
  • Multiple transition effects include wipes, dissolve, and cut
  • Preview and Program outputs
  • Advanced Extron Vector™ 4K scaling engine
  • Supports computer and video resolutions up to 4K/60 @ 4:4:4
  • Supported HDMI 2.0 specification features include data rates up to 18 Gbps, Deep Color, and HD lossless audio formats
The Extron ISS 608
Model Version Description Part #
ISS 608 Six HDMI & Two DisplayPort Inputs 60-1684-01

The Extron ISS 608 is an eight-input seamless switcher for the dynamic presentation of HDMI and DisplayPort content at resolutions up to 4K/60. It combines true seamless switching with advanced Vector™ 4K scaling technology. To enhance source switching and facilitate use in live environments, it provides multiple seamless transition effects, an independent preview output, and intuitive front panel operation. RS‑232 and Ethernet are additional control options. Logo insertion, video keying, and PIP capabilities complement primary content, and audio de‑embedding simplifies integration. Matrix Mode adds automatic, seamless transitions to matrix switchers with HDMI outputs. These features and capabilities enable the ISS 608 to deliver a true seamless digital signal switching solution perfect for high-end, live presentation environments.

Digital Connectivity with Preview and Program Outputs

Six HDMI 2.0 and two DisplayPort 1.2 inputs support signals up to 4096x2160 at 60 Hz with 4:4:4 color sampling. HDCP 2.3 compliance ensures compatibility with high value, encrypted 4K content. Separate Preview and Program outputs enable the operator to review sources on a local monitor before switching them to the viewing audience, making the ISS 608 ideal for live presentation environments. Selectable “Stay” and “Swap” modes allow the operator to choose whether the selected Preview source is retained after a switch, or replaced by the outgoing Program source.

Seamless Transitions and Presentation Effects

The ISS 608 enhances the delivery of any presentation by providing a wide variety of switching and visual effects. Multiple transition effects, including wipes with selectable direction and duration, a dissolve with selectable duration, and a seamless cut eliminate distracting jumps, glitches, and delays for clean, seamless source switching. A company logo or other custom graphic can be stored and recalled for insertion into any presentation. Multiple keying options enable the operator to overlay live content, scrolling text, or a stored graphic onto another source to enhance on-screen messaging. Picture-in-picture — PIP mode facilitates insertion of a PIP window that can be sized and positioned dynamically anywhere on the main display, including side-by-side, and transitioned into and out of the main display using the dissolve effect. The 128 user-definable layout presets and 16 PIP presets provide fast access to commonly used configurations and minimize risk of error during a live event.

Vector 4K Scaling

The ISS 608 switcher incorporates the Extron-exclusive Vector 4K scaling engine, developed in-house and engineered to deliver best-in-class image upscaling and downscaling. Vector 4K embodies several Extron-patented scaling technologies plus a new set of image processing algorithms that deliver uncompromising scaling performance. This enables sharp, accurate 4:4:4 processing and scaling of video and computer video signals up to 4K, as well as downscaling of 4K source signals for display in small windows or on lower-resolution displays without losing critical image detail.

Matrix Mode

Matrix Mode provides production-style switching effects for any HDMI matrix switcher. Connect two switcher outputs to inputs 1 and 2 on the ISS 608 to automatically apply a transition effect between the video sources when a switch is detected.

High Performance Video Processing

Selectable FILL and FOLLOW modes maintain proper aspect ratio of the output. FILL mode provides full screen output, while FOLLOW mode preserves the original aspect ratio of the input signal. Deep Color processing and high-performance deinterlacing of interlaced signals up to 1080i deliver optimal image quality for all content. Automatic 3:2 and 2:2 pulldown detection maximizes image quality for content sources originating from film. Additionally, the color space and chroma sampling of the HDMI output can be set to ensure compatibility with a connected DVI or HDMI display.

Audio Management

Embedded multi-channel HDMI and DisplayPort audio is switched, along with video, to the Preview and Program HDMI outputs. During a dissolve or wipe, the switcher performs an audio fade down/fade up transition for the duration of the video effect. The ISS 608 includes convenient balanced/unbalanced analog audio outputs on captive screw connectors for sending de‑embedded two‑channel audio to a sound system or other audio destination. Audio output muting can be independently managed for both analog and embedded digital outputs.

Built for Easy Source Integration, Reliable Operation, and Quick Switching

To simplify integration and to ensure optimal system performance and dependability, the ISS 608 features three Extron technologies: EDID Minder®, Key Minder®, and SpeedSwitch®. EDID Minder manages EDID communication between the display devices and input sources to ensure that content is displayed at the optimum resolution. Key Minder authenticates and maintains continuous HDCP encryption between input and output devices to facilitate quick and reliable switching. SpeedSwitch delivers exceptional, virtually instantaneous switching between sources with HDCP-encrypted content.

Multiple Options for Control and Operation

The ISS 608 features an easy-to-use interface with discrete source selectors for preview and program outputs, effect and preset selection buttons, and a front panel LCD menu system with navigation controls for quick access to configuration settings. RS‑232 and Ethernet are additional control options. The ISS 608 can be configured via USB and Ethernet using Extron's PCS - Product Configuration Software, which provides a user-friendly GUI that is very easy to navigate. This software application allows for expedited setup and commissioning, real-time monitoring, plus the ability to configure several ISS 608 units in the same session.


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ISS 608
   Frame rate1 24, 25, 30, 50, or 60 fps
   Chroma sampling1 4:4:4, 4:2:2, or 4:2:0
   Color bit depth1 8 or 10 bits per color
   Signal type DVI v1.0, HDMI v1.4 and v2.0, DisplayPort v1.2, HDCP v1.4 and v2.3
   Max. video data rate1 
      HDMI 18 Gbps (6 Gbps per color)
      DisplayPort 21.6 Gbps (5.4 Gbps per lane)
    NOTE     1Subject to the maximum data rate limit. Use our calculator at to determine video parameters supported by this data rate.
Video input
   Number/signal type 6 HDMI/DVI (HDCP compliant)
2 DisplayPort (HDCP compliant)
   Connectors 6 female HDMI Type A
2 female DisplayPort
   Horizontal frequency 15 kHz to 270 Khz for resolutions up to 18 Gbps
   Vertical frequency 24 Hz to 240 Hz for resolutions up to 18 Gbps
   Resolution range 640x480 to 4096x2160, 480i, 576i, 480p, 576p, 720p, 1080i, 1080p, 2K, 4K
3840x2160 (up to 60 Hz) to 4096x2160 (up to 60 Hz)
   Standards DVI 1.0, HDMI 1.4 and 2.0, HDCP 1.4 and 2.3, DisplayPort 1.2
Video processing
   Digital sampling 8, 10 bits per color maximum; 600 MHz pixel clock
   Colors 1 billion (10-bit 4:4:4 processing)
Video output
   Number/signal type 2 HDMI/DVI (HDCP compliant)
   Connectors 2 female HDMI Type A
   Video output power for active cables  2.2 W total for all HDMI ports, 1.1 W per HDMI port max
   Scaled resolution 640x4808, 800x6008, 1024x7688, 1280x7688, 1280x8008, 1280x10248, 1360x7688, 1366x7688, 1440x9008, 1400x10508, 1600x9008, 1600x12008, 1920x12008, 2048x12008, 2048x15368, 2560x10808, ​2560x14408, 2560x16008, 3840x21601,2,3,4,5,6,7,8, 4096x21601,2,3,4,5,6,7,8
​480p7,8, 576p6, 720p3,4,5,6,7,8, 1080i6,7,8, 1080p1,2,3,4,5,6,7,8, 2K1,2,3,4,5,6,7,8
Custom 1 through 10
1 = 23.98 Hz, 2 = 24 Hz, 3 = 25 Hz, 4 = 29.97 Hz, 5 = 30 Hz, 6 = 50 Hz, 7 = 59.94 Hz, 8 = 60 Hz
   Standards DVI 1.0, HDMI 1.4 and 2.0, HDCP 1.4 and 2.3
   Frequency response 20 Hz to 20 kHz, ±0.05 dB
   THD + Noise <0.1% @ 1 kHz, 20 kHz bandwidth at nominal level
   S/N >90 dB at maximum output (unweighted)
   Stereo channel separation >80 dB @ 1 kHz
   Supported formats 
      Analog de-embedding LPCM-2Ch
      HDMI pass-through LPCM up to 7.2/24-bit/192 kHz, Dolby TrueHD, Dolby Digital Plus, Dolby Digital EX, Dolby Digital 5.1, ​Dolby Digital 2/0 Surround, Dolby Digital 2/0, Dolby Atmos 7.2, DTS-HD, DTS ES Discrete 6.1, DTS ES Matrix 6.1, DTS Digital Surround 5.1, DTS 2-channel
Audio input
   Number/signal type 6 HDMI embedded audio
2 DisplayPort embedded audio
   Connectors 6 female HDMI
2 female DisplayPort
Audio output
   Number/signal type Stereo/mono, balanced/unbalanced
2 analog (1 program, 1 preview)
2 HDMI embedded
   Connectors (2) 3.5 mm captive screw connector, 5 pole
2 HDMI female Type A
Communications — switcher
   Serial control port 1 bidirectional RS-232, 3.5 mm, 3 pole captive screw connector (rear panel)
   Baud rate and protocol 9600, 8 data bits, 1 stop bit, no parity
   Serial control pin configuration 1 = Tx, 2 = Rx, 3 = GND
   Ethernet control port 1 RJ-45 female connector
   Ethernet data rate 10/100Base-T, half/full duplex with autodetect
   Ethernet protocol ARP, ICMP (ping), IP, TCP, DHCP, HTTP, Telnet
   Ethernet default settings Link speed and duplex level = autodetected
IP address =
Subnet mask =
Gateway =
DHCP = off
   Program control Extron control/configuration program for Windows®
Extron Simple Instruction Set (SIS)
Microsoft® Internet Explorer®
   Power supply Internal
Input: 100-240 VAC, 50-60 Hz
   Power consumption 59.1 watts
   Temperature/humidity Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing
Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing
   Cooling 2 fans, air flows right to left, as viewed from front panel
   Thermal dissipation 176 BTU/hr
   Rack mount Yes
   Enclosure type Metal
   Enclosure dimensions 3.5" H x 17.5" W x 12.75" D (2U high, full rack wide)
(8.9 cm H x 44.4 cm W x 32.4 cm D)
(Depth excludes connectors and knobs. Width excludes rack ears.)
   Product weight 8.55 lbs (3.88 kg)
   Regulatory compliance CE, c-UL, C-Tick, FCC Class A, ICES, UL, VCCI
   Product warranty 3 years parts and labor
   Everlast power supply warranty 7 years parts and labor
    NOTE     All nominal levels are at ±10%.
    NOTE     Specifications are subject to change without notice.
Shipping Dimensions and Weights
    Part # Height Width Depth Weight
    60-1684-01 10.5" (26.7 cm) 16.0" (40.6 cm) 23.0" (58.4 cm) 11.6 lbs (5.26 kg)


Panel Drawing

Panel Drawing
© 2021 Extron. Specifications are subject to change without notice.