I have two video sources that have issues that I thought could be fixed with an audio extractor like this. Basically, this device has an HDMI input for your source and then an HDMI output for your display. This device acts as a pass-through. However, it also has additional ports that allow you to connect speakers, headphones, etc. so you can receive the sound from your source as you would from a display device such as a TV or projector. and with an additional speaker. I have a Blu-ray player without Bluetooth. and it doesn't have a 3.5mm audio jack so I can't connect the speakers I have to it. I connected this blue ray to a projector which also doesn't have bluetooth but has a 3.5mm jack. I used a separate device to connect to this jack, which was then able to send audio to the speaker via Bluetooth. It worked, but the volume wasn't as high as I'd like. This gives me more flexibility and allows me to connect more devices. I also have an old Fire TV device and a newer Fire TV Stick. The newer one can connect to a speaker via Bluetooth and it works fine, but when I want to connect multiple speakers, let's say front and back, I can't use bluetooth and need to use wired for this device to allow it. . An older Fire TV should also be able to connect to the speaker via Bluetooth, but it refuses to see my speakers, so I can use those instead. The old Fire TV is connected to a really old TV that doesn't have an HDMI port, so I have to use an adapter between the Fire TV and the TV. I also have an HDMI switch between the TV and Fire TV. I have two pullers. This allows me to make all of these connections without having to be plugged into an AC adapter. It will get enough power from the HDMI adapter. However, the other extractor will not get enough power from this adapter, So I need to connect it to an additional power supply. However, when using this with my new Fire TV Stick and projector, I need to plug it into a power source. It works very well and it's not particularly big. It has two EDID switches, so you might have to fiddle with them to get audio and video signals to your display with ease. So far I'm very satisfied because this device does exactly what I need.
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