/diy/ - Do It Yourself

I added a BK8000L Bluetooth module to this bad boy that's been sitting in the garage for too long. I'm getting insane noise due to the common ground. I've been researching the module and I guess it's a bitch that needs a separate power supply or a different circuit for the amp. I can't modify the already existing amp circuit on the boombox, and I've decided to change the BT module to something more agreeable. However, I'm not too knowledgeable on BT modules. Are there any modules that can run on a common ground circuit without being a noisy bitch?