There is definitely a difference and it is in favor of APT-X. I’ll say a few words for what it is for me personally.
In the device manager, it is defined like this. On one side is a microUSB power input and an antenna jack.
And then we just pull out all the insides. Yes, and the future will not hurt. There were stutters, repeating after 5-10 seconds, and I did not immediately understand what was the matter. I have a set of 5.1 speakers with an optical input and it is quite bulky.
3.6V7536-1 power regulator It didn’t matter to me and he sent a golden one. I compared the sound from several phones, put the same tracks, they were played by the same applications. Actually, as promised, I post information about the purchase. But as I reduced the distance to 2 meters, everything was fine. I bought back in February from a seller who agreed to send a photo of the board.
When connected to a smartphone, the logs show that it works using the APT-X protocol. Fortunately, it is powered by microUSB, and many people have an audio cord, for example, from the center kit. And remember, this is NOT an audiophile opinion and not for audiophiles. With the help of special test videos, I determined that the audio delay is 0.3 seconds.
The box is small: 57 x 57 x 27 mm. Don’t kick too much, I’m not an expert in audio equipment, but I hope my review was interested in this device
Yes, not 5.1, but still much better than the projector’s built-in speakers. A short review at the request of readers. Let’s look inside.
Connection occurs without asking for a password.
There are no components on the reverse side.
I’ll tell you right away I’m not an audiophile, this is not an audiophile device (well, electrons cannot be transmitted through the air without distortion)))) and there will be no measurements or colorful descriptions of the ringing of cymbals and bass depth. Even neighboring points can be seen pieces 5-7 and then the signal is weak. https://jiji.ug/55-sneakers/white
This is what it looks like with the new antenna. Boxes come in different colors, but not all colors are always in stock. I chose an inexpensive device for this, with support for APT-X. The review is just for those who want to stream sound in acceptable quality to their, of course, non-kosher audio devices. At home I have thick walls and there are a lot of fittings in them. And this is just a device for transmitting sound over the air with acceptable quality for little money and no more.
MS amplifier SGM4812 Well, in addition to movie screenings, I also broadcast music from my smartphone to it. Everything is great within the same room.
Easy to disassemble – the end caps are held on by latches.
Front side of the board. By the way, it can also be hidden in the car and powered from a converter or adapter to the cigarette lighter. Everything is mounted very well, there are no comments. Instead, I connected the module to the input of an old Samsung MM-ZS8 music center, and placed the speakers from it on the sides of the projector screen.
From the other audio outputs: "tulips" and minijack 3.5 mm. Apparently, the BT is rather weak in the projector, but the antenna is easier to replace here And for music it is not critical at all. In terms of sound quality, this box suits me perfectly, both for watching movies and for background music. I entered this value into the MXPlayer settings and now everything is perfectly synchronous for me. After buying furniture and arranging the room according to Feng Shui, you can no longer arrange it, and there is no desire to carry wires. Although the projector itself does not support this protocol, the phone works with it.
Power supply with galvanic isolation is provided by DC-DC converter b0505s. With it, the sound is cleaner, the frequency range is wider.
The projector itself is on the opposite side of the room.
I had a 2.4 GHz router, I installed it and the problem was solved.
The Bluetooth module on the CSR64215 chip is soldered on the main board. So it breaks through from the next room, but the signal is not stable, it depends on the position and there are breaks. The background is a little audible in the headphones on pause, but I can’t hear it on the speakers, even next to the speakers. Temporary solution, in the future I will select a suitable kit 5.1. It does not come with any cords and power supply.
The connector, if someone also wants to put another one. But not with the projector ((

Sanwu SW-HF59 – Bluetooth 4.2 audio receiver with APT-X on CSR64215 chip

Now it has risen in price a little more, but I think you yourself will find where it is cheaper at the moment.
The device is packed in an aluminum case, with plastic end caps with textolite inserts. With the price, by the way, I made a little mistake in the comments, I paid $13 for it, not $12. Yesterday, in the comments to a similar device, I asked if a similar device was interesting? And judging by the number of pluses, people demand. But for this, of course, its support is also needed from the side of the transmitting device.
I was satisfied with everything and I paid for the order.