That’s not the way that unit works. The wireless receiver has a built-in amplifier, which means you have to connect standard passive speakers to it. (The Rocketfish is another version of the type.) It has no line-level audio outputs that would send a signal to an active (self-powered) powered...
The fact of the matter is, Bluetooth is about the worst wireless platform out there. It’s unreliable because it works on the crowded 2.4 gHz frequency band, and really - do you want to go through the hassle of pairing everything up every time you want to use the system?
The only reliable...