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VGA/Stereo-Audio Fiber Extender Transmitter, 4-Port, (4) ST Optical Outputs, (1) RGB Input with Loop-Through, (1) 3.5-mm Audio Input with Loop-Through

Extend high-resolution RGB and audio signals over single-mode or multimode fiber.


Limited Quantity In Stock
Same Day Shipping (before 5PM ET)
Extended Double Diamond™ Warranty Available (3 Additional Year)

*Required field

Product Features

  • Digital processing ensures crystal-clear transmission with no color pixel skewing.
  • Send high-resolution RGB and stereo audio up to 750 meters (2460.6 ft.) over multimode fiber optic cable or up to 30 kilometers (18.6 mi.) over single-mode fiber optic cable.


  • Require only a single fiber strand.
  • Transmit VGA, SVGA, XGA, and WXGA.
  • Support HDTV resolutions of 480p, 720p, and 1080i (RGBHV format only).
  • Easy to install—require no adjustments, equalization, or de-skewing.

    Do you need to send high-resolution RGB and audio signals over single-mode or multimode fiber? Then look no further than Black Box's RGBHV/Stereo-Audio Fiber Extender Transmitter! It works in point-to-point, point-to-multipoint, and drop-and-repeat configurations.

    This fiber extender transmitter is ideal for applications in which you need to keep your audience informed and up-to-date, including:

  • Broadcast studios where you need additional video and audio capacity.
  • Corporate theaters for presentations and important company information.
  • Stadiums for live game coverage everywhere in the facility.
  • Airport kiosks with flight and retail information.
  • Stores with sales, special offers, and other important information for your customers.
  • Medical facilities to share images and observe procedures.
  • Network operations centers.
  • Secure facilities.
  • And many more!

    The fiber extender transmitter is interoperable with our other Black Box RGBHV/Stereo-Audio Fiber Extender transmitters and receivers. You can use each receiver with each transmitter, so nearly any configuration you design will work.

    By operating in the 1310-nm wavelength over multimode or single-mode fiber, this unit reduces optical loss and enables you to get maximum distance in your application—up to 750 meters (2460.6 ft.) over multimode cable and a whopping 30 kilometers (18.6 mi) with an optical loss budget of 15 dB over single-mode cable. It maintains high-resolution video integrity with uncompressed, unscaled 24-bit RGB processing, and because the audio signals are also sent over fiber, you're not limited by copper distance restrictions or signal degradation.

    What's included with the AC1021A-XMIT:
    • Transmitter
    • 6-ft. 3.5-mm audio cable
    • 6-ft. 3.5-mm to (2) RCA male audio cable
    • 6-ft. HD15 male to HD15 male VGA cable
    • External power supply
    • Manual

    Product Includes
  • Transmitter
  • Rackmount screws
  • (4) rubber feet
  • Fuse
  • Manual
  • Questions? Contact our FREE Tech Support.

    Tech Specs

    cUL 0
    UL 0
    Audio Bandwidth 20 Hz to 20 kHz
    CE Approval Yes
    Connectors Video: (1) HD15 F; Audio: (1) 3.5-mm stereo jack; Fiber: (4) ST®; Power: (1) terminal block
    Dimensions 1.8"H x 16.8"W x10"D (4.6 x 42.7 x 25.4 cm)
    Distance (Maximum) Multimode: 750 m (2460.6 ft.); Single-mode: 30 km (18.6 mi.) (Optical loss budget of 0-15 dB must not be exceeded regardless of distance.)
    Indicators LEDs: (1) Power, (1) Video, (1) Audio
    Power 95-250 VAC, 9 W
    Wavelength 1310 nm
    Weight 5.5 lb. (2.5 kg)
    This product works with:

    This product works with:
  • Premium Ceramic, Multimode, 62.5-Micron Fiber Optic Cable, ST–ST (EFN110-STST, etc.)
  • Single-Mode, 9-Micron Duplex Fiber Optic Cable, PVC, ST–ST (EFN310-001M-STST, etc.)
    Questions? Contact our FREE Tech Support.

    * Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 877-877-2269.

  • Support


    Double Diamond Warranty

    Extended 1 Year Warranty Available

    Protect your purchase with an additional 1 Year Double Diamond™ warranty!
    Cost: $299.60

    Extended 3 Year Warranty Available

    Protect your purchase with an additional 3 Year Double Diamond™ warranty!
    Cost: $599.19


    Double Diamond™ Warranty (Standard)

    Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.

    The Double Diamond Warranty is our warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

    The VGA/Stereo-Audio Fiber Extender Transmitter, 4-Port, (4) ST Optical Outputs, (1) RGB Input with Loop-Through, (1) 3.5-mm Audio Input with Loop-Through comes with a standard 3 Year Double Diamond™ Warranty (Standard) already included.

    During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!*

    Plus, get an Extended Double Diamond Warranty.

    You can also extend your warranty or protect a previously purchased Black Box® brand product** for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

    Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 724-746-5500.

    * Warranty subject to certain exclusions and limitations ** Certain products may not be eligible.

    What’s more, we also have a 45-day return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.