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I am roadtesting an IBasso DX240 which is working really well except in one respect and that is the Bluetooth connection. I have tried it with a Sony Soundbar, Bowers and Wilkins headphones and Sony in ear phones and the same issue crops up with all - and it is a dangerous one.

When I switch the bluetooth device on and press play on the DAP, the volume is deafening until I twiddle the volume knob slightly at which point it drops to normal. It happens every time I reconnect the bluetooth device to the player but wjhile it remains connected I can pause and play as often as I want and it doesn’t happen - the volume level remains normal.

Anyone have any ideas?