Mackie Thump GO Bluetooth Protocol
Connection
The Thump GO is visible as two Bluethooth devices. Thump GO is an audio device. A connection has to be established for the other interface to work.
The Bluetooth device named LE_Thump GO is used for controlling the loudspeaker. This is the interface that the official app Thump Connect 2 uses. This device offers service UUID 49535343-fe7d-4ae5-8fa9-9fafd205e455. Appearently, this is the BM70/RN4870 chip with service "Microchip Transparent UART". Here, I list all the commands of that device that I could reverse-engineer. I assume no liability for the correctness. All numbers are in hexadecimal notation.