I have been testing the Bela unit via a PoE+ connection!
Currently, I do not have a POE+ switch hub such as "24-Port Gigabit Ethernet PoE+ Smart Switch":
Thus, I purchased a PoE+ injector and a PoE+ splitter such as the followings (There is no product information in English on the product I bought.):
The power cable from the POE+ splitter is split using a splitter (1 Male to 2 Female Way DC Power Splitter Cable Barrel Plug 5.5 x 2.1mm) such as the following model (The cable I purchased, is much cheaper than the product below, and there is no information on the manufacturer, but it seems to work well):
The amplifier is a PCB amplifier TPA3116:
According to the information on the TPA3116, it works when the power input is from 12 to 24 volts. However, it works with 5 volts. I suppose that the amperes from the splitter are enough to let TPA3116 work. However, I am not sure about it. The important thing is that it works!
The test seems to be successful. I tested it for almost over one hour!
My Bela unit works well!
I am delighted to see this positive result!
I only need Ethernet cables and a PoE+ splitter per Bela unit to use Bela unit with an amplifier and a loudspeaker!
I suppose that it should work for an amplifier with multiple loudspeakers if the whole Watt for the device set allocated to one PoE+ splitter does not exceed 30 W!