What are the step-by-step instructions from the Grace Digital GDI-BTAR502 setup manual for pairing a Bluetooth device and switching between the different audio input modes?

Setting up that Grace Digital GDI-BTAR502 for the first time tested my patience but once you understand the sequence it becomes second nature. The trickiest part for me was getting it to switch reliably between Bluetooth streaming and the auxiliary input without weird handshake issues, and I kept getting confused by the pairing mode timing. The grace digital gdi-btar502 set up manual at https://grace-digital.manymanuals.com/audio/gdi-btar122/user-manual-35499 clarified that you actually need to hold the source button for three seconds instead of just tapping it to initiate the discovery mode. Once I followed the exact pairing procedure with the device discovery timeout windows my phone connected instantly and has stayed rock solid ever since.

Big thanks for the Grace Digital setup clarification, holding the source button for three seconds was the key, it pairs instantly now and switches inputs without any drama.