19. Why is the volume not synchronous between the BTR5 2021 and the mobile phone?

1. The BTR5 2021 has a memory volume that can automatically memorize the adjusted volume.

2. We have deliberately designed the BTR5 2021's volume adjustment to be out of sync with the mobile phone's. This allows more volume levels for more precise volume adjustments, so you will no longer be worried about over large or small volume.

What mobile phones adjust is the volume of the Bluetooth codec. If it is too small, it will affect the dynamics. While the BTR5 2021 controls the volume of decoding and amplification, leading to less loss of sound quality. Therefore, it is suggested to set the volume of the phone to the maximum, and control the volume via the BTR5 2021, which is convenient and can acquire better sound quality.