
Just got my BT20C Fosi Audio Amp and couldn't be happier! I had no problem getting it to work, even with a 30ft distance between it and a BlueTooth source. There's no noticeable audio lag, so lip-syncing with the video image isn't an issue. The device is VERY solidly built and nice and small. It sits on a table next to my sofa and is barely visible. My app is a little different from most as I use it as a headphone receiver for BT audio from my TV to avoid disturbing others in the house as we have multiple TVs and some of them are quite close to each other to hear theirs Sound. I was initially concerned that this "speaker" would be too loud for headphone use, but I was pleasantly surprised to find that the volume knob only moved to the 8 o'clock position (barely on) for one perfect volume. even. What I really appreciate are the tone controls on this BT receiver as my headphones tend to be too bassy and lack treble which makes it difficult to understand TV dialogue at times. But with the BT20C I can mute the bass and boost the treble for crystal clear speech. The volume control on the device also obviously comes in handy to adjust headphone volume as needed. This feature gives me the freedom to use a wider range of headphones, as I no longer have to limit my choices to headphones with volume controls built into the cord. The Class "B" amp is meant to be low power, so I just leave it on all the time, which has the advantage of not requiring reconnecting to the BT source as it's always connected. Last note. Had the opportunity to speak to Fosi tech support as I originally accidentally ordered the wrong unit and had to send it back for the BT20C which is what I really wanted. My support experience was A LOT, one of the best I can remember. Very nice people. Very helpful and did everything they promised. LARGE COMPANIES. I would have no hesitation in recommending this product to anyone.

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