Bluetooth as a standard has the audio device tell the master device what volume it is set at. For whatever reason, devices are almost universally terrible at managing this.
For my WH1000 (it’s been the same with the XM2, XM3 and XM4 models), if I switch from my phone to my laptop, the laptop will leave the volume label set to say 80, but set the devices actual volume to 20. The quick fix is to pair it back to the phone, turn it all the way up and resync to the laptop.
For my WH1000 (it’s been the same with the XM2, XM3 and XM4 models), if I switch from my phone to my laptop, the laptop will leave the volume label set to say 80, but set the devices actual volume to 20. The quick fix is to pair it back to the phone, turn it all the way up and resync to the laptop.