Trying to connect my august ep650 headphones to esynic AD2P bluetooth

Hello, it is not difficult to achieve this purpose, you need a simple adapter, I will link a video that has a better graphics explanation about it.
I thank this friend blog that gives us this information as well as its channel. https://tampatec.blogspot.com/2015/08/how-to-connect-bluetooth-headphones-or.html

If the bluetooth you are referring to is a bluetooth earbud, the batteries may be dead. You may need to buy a new earbud.

Because you use the word 'pair' I have to assume that your headphones are Bluetooth-enabled. If this is the case, you can pair and connect the headphones to your phone and/or your iPad, which are, like most, if not all, phones and tablets, Bluetooth-enabled. On the other hand, very few desktop computers and/or laptops are Bluetooth-enabled. Your computer does not recognize your Bluetooth-enabled headphones because it is not Bluetooth-enabled.

Did you try 0000?

How to pair and then connect to a Bluetooth device on your T-Mobile G1 Google smartphone.
1. First, ensure Bluetooth is enabled.
2. From the Home screen, press Menu.
3. Select Settings.
4. Select Wireless controls.
5. Select Bluetooth settings.
6. The G1 starts searching for Bluetooth devices in range. Select the device when it appears.
7. Type the PIN for the device.
8. The device should then pair with the G1. You can then select the device name to connect.
Bluetooth only supports ad2p profiles for headsets, music, and sharing of contacts and pictures. This is limited by VZ. Until the phone is rooted, there is absolutely no way around this. You cannot send files other than contacts and pictures via bluetooth.

It sucks... I know. I am in the same boat. I am [im]patiently waiting for the droid to be rooted so I can use bluetooth to share files between two droids.

You need to make sure that your bluetooth device supports AD2P.

To turn on bluetooth on the iPod- settings>General>Bluetooth>On. iPod Touch will only detect AD2P Stereo Headsets, not mobile phones, none AD2P Stereo Headsets, and others. hope this will help. Enjoy !!! Thank you for using Fixya !!!

The only thing i can think of is that it might the bluetooth protocol used by the two are not completely compatible. Look in the manual for the stereo and see if the bluetooth is AD2P if so then the hero doesn't support that type of bluetooth stereo. best guess

A method to do pairing in "the second channel."

1. Trun off BT3030 first.
2. Continue pushing the power button till "Jabra" mark turns on pink next.

Attention： Continue pushing the power button after "Jabra" mark became the blue.

Each brand has it's own peculiarities and you did not specify the brand. I would suggest turning off the headphones, resetting the transmitter (turn off and on again for separate devices) and then pressing and holding the 'on' switch for 15 seconds or so. You may see (in some models) a light start to blink blue then red and back. This should indicate that the receiver (headphone) is trying to find a transmitter to pair with. Hope this helps.