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    Monoprice Blackbird 4K Series HDMI Audio Inserter
    Product # 13347
    In Stock This item should ship tomorrow (9/24/2018) if ordered within 4 hours 15 minutes

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    Model 13347
    Video Input HDMI®
    Audio Inputs HDMI, Digital optical S/PDIF (Toslink®), Analog stereo 3.5mm TRS
    Output HDMI
    Video Bandwidth 340Mbps per channel (10.2Gbps total)
    HDMI Audio Sampling Rate Up to 192kHz
    Digital Optical S/PDIF Audio Sampling Rate Up to 192kHz
    HDMI Audio Formats 2/5.1/7.1 channel LPCM, 2~5.1 channel DTS®, Dolby TrueHD™, DTS-HD Master Audio™
    Digital Optical S/PDIF Audio Formats 2-channel LPCM, 2~5.1 channel DTS
    Analog Audio Format 2-channel analog
    Power Source 5 VDC, 2A
    Operating Temperature +32 ~ +104°F (0 ~ +40°C)
    Storage Temperature -4 ~ +140°F (-20 ~ +60°C)
    Dimensions 3.7" x 3.3" x 0.9" (95 x 83 x 24 mm)

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    Browse 14 questions Browse 14 questions and 24 answers
    Will this work with only an audio input connected? Or, is a valid HDMI input signal also requireed to insert the audio?
    A shopper on May 16, 2017
    BEST ANSWER: yes however you will get a 4:3 blue box which will be pillar barred with black by your TV. however I could not get it to work with audio and video simultaneously from a computer so be aware.
    I have the C61K mini box connected direct to my Samsung TV, then using the ARC HDMI connection to my denon receiver so I can use the smart TV features. Will this box remindy the audio dropout from the 4K mini?
    Thanks for any help provided!
    New User U on Apr 9, 2017
    BEST ANSWER: Hello, thank you for your question. In order to better assist you, please reach out to our technical support team with a detailed question via any of the methods available here:


    Our knowledgeable Technical Support staff would be more than happy to assist. Thank you
    If the HDMI input already has audio on it, does this eliminate it and replace with the new audio input? Or does it just add them both together?
    A shopper on Oct 26, 2017
    BEST ANSWER: it embeds audio into your video source any video source with audio will be ignored and use whatever source you use as audio
    What's included in the box?
    A shopper on Dec 26, 2016
    BEST ANSWER: You'll receive the HDMI Audio Inserter, a power supply, user's manual and a box. No cables are included. The audio inserter has HDMI in and out for video and a stereo 1/8in jack for the audio. For my application, I needed an RCA to 1/8in cable for the audio. I've been using it with my security camera DVR that has an HDMI output for video only. I insert the audio with this box. I've used it for many months without any problems.
    I need to come out of my direct tv box and go to two tv to watch tv in either room?
    A shopper on Feb 8, 2018
    BEST ANSWER: I believe you would be looking for a Blackbird HDMI Splitter, not an inserter. We have used he Blackbird 4K Pro 1x2 Ultra Slim HDMI Splitter (pid 21612) for similar applications; it should be sufficient.
    Does this work for lower resolutions such as 720p or 1080p?
    A shopper on Feb 22, 2017
    BEST ANSWER: since I have nothing else better to do with this device, I decided to test for you.
    1600x900, 1260x768, 1344x1008, 1280x768, 1024x768, 800x600 all displayed on my TV as expected either cropped, letterbox or stretched. however the TV did not report the correct resolution it did however look like it was actually displaying the passed resolutions. 1080P, 1080i, 720P and {?}480P all were reported by the TV as the appropriate resolution. so the answer is yes it can indeed pass through most resolutions. however I don't have anything 4K to test with.
    Will this decode DD+ to DD? (Netflix, Amazon)
    Bob S on Apr 13, 2018
    BEST ANSWER: Is not a decoder, it only unites the signal from multiple sources to HDMI
    Is there a surround sound version of this (# 13347)? I want to connect 5.1 analog to a surround amp but it only takes HDMI for surround sources.
    New User U on Dec 23, 2017
    BEST ANSWER: I have this unit. It is meant to take an anolog source and embed the audio in the hdmi signal. We use it at our church. We take the hdmi source and the the sound out of our sound board and it embeds it in the hdmi cable to send to our various rooms.
    If I purchase two units, can separate analog audio signals be embedded on the left and right signals at different points of the signal path?
    A shopper on Aug 25, 2018
    BEST ANSWER: I'm sure that only the last one in the chain would be where you have to provide the audio. The embedder doesn't have "mixing" capability. Any embedded audio that hits the last embedder won't be passed through that embedder.
    Can this encode Dolby Atmos over arc?
    A shopper on Jul 30, 2018
    BEST ANSWER: Not sure
    Shooting a reality tv series that uses HDMI output to a Sound Devices Pix 240 at 4k. Will this device insert audio in sync with the video signal such that the Pix caputures video and audio in sync?
    New User U on May 8, 2018
    BEST ANSWER: The audio & video signal going into the Blackbird 4K will have to be synced before it goes through the Blackbird 4K. The Blavkbird 4K offers no adjustments for video or audio syncing.
    Why does the switch have a setting for “HDMI”? Wouldn’t this just behave the same as the system would without this unit installed? (So setting the switch to this setting defeats the entire purpose of the switch, right?)
    Scott L on Aug 5, 2018
    I’m the sound recordist on a tv series using an HDMI output from a Sony camera to a Pix 240 at 4k Pro Res. This output will not embed timecode, so we need to embed audio instead to allow for syncing the footage with other cameras. Will the sound signal embed in perfect sync with the video?
    A shopper on May 8, 2018
    Does this pass through HDMI ARC?
    A shopper on Dec 31, 2017
    4.3 / 5.0
    15 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Star
    Issues using HDMI on TV's
    I need to combine Analog Audio with HDMI Video from a computer and play through a TV HDMI Input. I tried 3 different new TVs, all different manufactures.
    Audio turns off when you plug in Video Input. I tried several computers.

    The Analog Audio works only when the Input to the TV is not plugged in, as soon as I plug in the Video Input Audio goes away but picture is good.

    Sources tried MAC pro and Mackbook pro Laptop. I tired different resolutions

    If I plug in an Apple TV then the analog audio passes via HDMI with Video

    If I use a video monitor with Speakers all works as expected

    I also tried a Monoprice Dr HDMI that inserts EDID info..No luck

    This product is Identical to several other manufactures (Re-Branded) I found review with same issue

    CONS: Dosen't seem to work with Computer Video source and Audio
    March 9, 2016
    Finally solved my DirecTV C61K audio drop issue
    This device worked like a charm. It has a 3-way switch which allows you to pass through the original audio, switch to a digital/optical source or even insert analog audio. I used optical out of the C61-K DirectTV client. So basically this device's output seems to be providing what the C61K should have been providing (clean and compatible HDMI audio without hiccups when used with older receivers, Samsung TV's, etc).

    PROS: Allows a problematic C61-K DirecTV box with non-backwards compatible HDMI audio to reinsert a good audio source (optical from the C61K itself in my case) and produce much more durable HDMI output that works with an older Onkyo 1080p receiver and a Samsung TV that balked with the original DirecTV C61K HDMI output. No more audio drops!

    CONS: When I tried using the device in passthrough mode, I noticed a slight lipsync issue. So it must be massaging the original source to some extent. But I have a feeling people aren't buying this for passthrough mode....
    November 1, 2016
    Buyer beware, does not work with devices that don't output audio on HDMI!
    yes you read that right it does not output audio if using an HDMI / DVI output that does not output audio.

    in my case I picked this up to insert the audio from my laptop with the DP video, as I have an older 2nd generation unibody MacBook Pro ( mini display port HDMI adapter ). I also have a MonoPrice USB video adapter PID 6038 that doesn't output audio that I thought I could use this with on Windows and Mac computers that don't support DVI or HDMI. I figured after recently acquiring a MacBook air that only had VGA and DVI this would be more universal than the DisplayPort only adapter PID 6331/ 5969, and no lag like USB adapters in some cases.

    however the only way I can get a TV to accept an audio signal is if I use a computer that supports audio over HDMI. a.k.a. the computer I don't have and that I had to borrow to test. but if I'm doing that then the computer already can output audio over HDMI which defeats even having this device in the signal chain.
    Unless you need to re-encode the audio being sent out from a STB device or coming in from an analog source back into the video chain.
    I only tested under 1080P. as I will most likely not run anything other than 1080P / 720P / 1080i in that order if the device supports it.
    I was able on both TVs to get an audio source to play on the TVs with a blue screen and no HDMI input ( blue screen generated internally from this device In a 4:3 format with black bars).

    so my options are.
    #1. to get the DVI version of this PID 8124, and then not be able to take advantage of the optical output of my good computer. and require a HDMI to DVI adapter and minijack to RCA cable. the most compatible and cheapest option albeit it's going to be a mess of adapters ( micro-DVI, mini-DP-HDMI or USB-DVI to DVI-HDMI to HDMI to HDMI-DVI to DVI&Audio-HDMI ).
    #2. get the DisplayPort version PID 6331/ 5969 and only be able to use it on my good computer.
    #3. get a USB to HDMI adapter that supports audio PID 8079 and lose all of my USB ports on the MacBook air or lose one of my USB ports on the MacBook Pro. ( can't use USB hub without loss of bandwidth apart from a mouse and keyboard which is not needed on a laptop. those USB display adapters suck down most of the USB 2.0 bandwidth and I don't have USB 3.0/3.1/C). the simplest of the 3 options.

    my 1st impression is that it does not generate an internal audio sync signal and is piggybacking the audio sync from the HDMI input and intercepting and inlaying its own data on the output. and if that's the case it will be useless for any device that does not output a fake or valid HDMI audio channel.

    So to return / exchange or not to return / exchange, that is the question?
    if I could expect a firmware update I would keep it, but if not I have absolutely no use for it ( and I even have DirecTV). the overall quality and construction is awesome but……………..
    this order has been a nightmare since Memorial Day…………………………………………….
    June 21, 2017
    1 year ago
    Response from Monoprice
    I'm sorry to hear of the issue you have experienced with this audio inserter, please feel free to contact us at reviews@monoprice.com with a detailed summary of the issue you are experiencing and our knowledgeable Technical Support staff would be more than happy to assist. Thank you
    June 26, 2017
    New User U Staff
    Work around help!
    We had a modulator that would not take video from a pice of equipment because the "audio was not valid." The equipment was not meant to supply any audio. I placed this unit in line and the modulator was very happy!
    March 26, 2017
    1 year ago
    HDMI Audio Inserter - Awesome!
    Ordered this unit in a pinch for an install that needed an inexpensive HDMI audio embedder. It absolutely works like a charm.
    May 18, 2017
    1 year ago
    Performed as advertised
    This little box did exactly what it was supposed to. I needed to stream a live church service back to our nursery workers with sound. I have know idea why in the 21st century we can't make an HD camera/camcorder with an onboard mic stream audio with the video. It will record both but not stream it live. This audio inserter allowed us to take audio from our sound board and add it to the HDMI signal flawlessly. Really? Camera/camcorder manufacturers can't do this with a $5. chip integrated into the cameras somehow? Wow.
    I highly recommend this inserter. It works exactly as advertised. By the way, Monoprice, you rock!
    April 19, 2017
    1 year ago
    Solves C61K audio drop issue.
    Thanks Plasman, it does solve the C61K audio drop issue when used to insert the optical output from the C61K into the HDMI stream.

    The only issue I have is every few days the TV will sync, but have a black screen with no audio or video. Power cycling this box fixes the issue, but that's annoying. However, that's less annoying than the C61K audio drops, and may be solved with a timer, or remote controlled power strip.
    December 5, 2016
    This device works perfectly for my application.
    I am using the Audio INSERTER to bring a Smart TV Optical audio into an HDMI AUTO SWITCH.
    Every thing works perfectly. To eliminate manual switching, i am using a wemo power plug for the audio inserter and controling it with my echo/alexis
    October 26, 2017
    1 year ago
    Does the job
    I used it to combine the HDMI video feed from a camera, and the 3.5mm audio from a soundboard to send to a Webcaster X2 streaming device. It worked perfectly for this. I didn't test the optical audio in at all.
    January 31, 2018
    8 months ago
    performs the exact function I needed
    I had an application for embedding audio from an analog source, along with a slide show for an idle video channel. This box does exactly what I need.
    December 20, 2016
    1 year ago