Purchased this for live streaming sports online to combine the video signal with the audio play by play signal. Works great and a much more affordable version of the one it replaced. Better quality build on this one as well.

Lo he usado para transmitir eventos, mientras que en una pc hago streaming con audio con comentadores, a otra pc le ingreso el audio ambiente atraves del dispositivo. Teniendo dos streams independientes con audios diferentes.

ビデオカメラで撮影した演奏動画を高画質のまま、音声のみ楽器から直接取り込んで合成できるため、周囲の雑音が混じることなく、高画質高音質でHDMIに出力できました。懸念点であった映像と音声のズレもほとんど気になりません。PCに取り込んでタイミング合わせの編集をする必要がないのでお手軽です。合成したHDMI出力は、IOデータのビデオキャプチャで.mp4形式にしてSDカードまたはUSBに保存しています。電子ピアノやエレクトーンの撮影に最適だと思います。

The device works great. Unfortunately it does have a very slight delay in audio (might be both audio and video), which is noticeable, when running karaoke from the computer through it, inserting the audio from the microphones, mixed on an analog sound board. It sounds like there is a reverb, but its actually the sound from the speaker being slightly delayed compared to the singers voice. Otherwise its a perfect, and the 'reverb effect' might not be as noticeable in larger rooms, where the singer itself can hardly be heard over the speakers.

I have read several reviews of this product here on amazon. I have read several reviews of this product on monoprice's own website. I have read several reviews of this audio inserter on various other forums and websites. A common theme among them is that some people have this working, and some people do not. Those who do not, are convinced that "it doesn't work," or even better, that "it doesn't work with a PC," or even "it doesn't work if your HDMI signal does not already carry audio." Those who don't have this working complain the loudest and insist that these things are so.I'm here to tell you that this audio inserter works. It works perfectly. It does exactly what its name says it does, what the product bullet points say it does, and most importantly, IT DOES WHAT YOU WANT IT TO DO. I know this because after reading so many "it doesn't work" reviews, I had read at least as many "this does exactly what I need" reviews, and I decided to take a calculated risk that maybe, just maybe, computer and audio setups are complex and that there was a chance that many people, despite being tech savvy were missing something and blaming the box--and after receiving my box, AND MISSING THINGS MY OWN DUMB SELF, I got the box to work.And it works great! It sends a one-to-one audio signal of your choice, via either 3.5mm analogue input, or toslink optical cable. Dolby? DTS? Plain old stereo? Whatever it is that you send it, it will pass it along. Does your HDMI source not have audio? IT DOES NOT MATTER, it will still insert the audio that you input and spit both of these out the HDMI socket on the front of the box. I know this because this is how I use this box. So to those poor souls who hated this inserter I say, try again. Scrutinize your setup. If all else fails, stop and LOOK at your toslink cable, after you plug it in to your source but before you plug it in to the box. If you don't see a red light, then you don't have a working toslink audio source--which is what turned out to be my problem, and something I only discovered after hours (that's right, I said HOURS) of screwing around and troubleshooting. And no, there's not a chance in hell my HDMI source has audio, either, because that is one of MANY bases I covered in my troubleshooting (I didn't want to use it with an HDMI audio source anyway). I'm not one to deal with stupid crap that I pay for, so if this box did not do what I say then I would shoot it straight back to monoprice for a refund, and after only a day's use of it, that's definitely not going to happen. My SoundBlaster Z card is piped in to my 5.1 audio receiver now. Oh and one more complaint I've seen a lot about this box, audio lag over toslink--DOES NOT HAPPEN.Pros:1. Inserts toslink or analogue.2. Inserts the same signal that you insert (DTS, Dolby, etc.).3. Zero lag.4. This monoprice box is the cheapest inserter I've seen that does what it does.5. It does 4K also.Cons:1. I can only think of one, and that is the custom nature of the jungle that you may be wading into by trying to use this box in the first place. I can see from reading these comments that TOO MANY USERS gave up when the box was not at fault.2. That's about it, can't think of anything else negative to gripe about.If you have a need to insert whatever audio into your HDMI source, this WILL do the task.

Does exactly what it says on the tin. No noticeable input latency and perfect synchronising of audio/video. It just works!

Cumple su función, inserta sin ningún problema el audio a una seña HDMI, yo lo use para insertar audio a una señal DVI y lo hizo sin problemas cumple lo que promete, es muy recomendable y a muy buen precio ya que existen otras opciones mas caras