Review on Premium Pearl: Upgraded Bose SoundLink Mini Bluetooth Speaker II by Agata Koacz ᠌

Wanted to upgrade my mini 1 to this one. Deafening disappointment. When turning off a grounded computer, when connecting a mobile phone via cable - a continuous loud crackle of 50 Hz. It crackles even when powered from the usb port of a grounded computer, albeit quietly. Silence - only from the accumulator. Any connection to a 220 V network, through any adapter = crackling. At the same time, there are no problems with mini 1 or with any other acoustics. The column, of course, is the original, bought from a Bose official. The Bose SC commented on the situation, calling it a "feature". If the screen of a 3.5 mm jack is connected to the usb connector housing, the crackling disappears, which indicates poor-quality grounding of the screen . But this is a of the 80th level. I'm just in shock. It starts cracking even if you touch the screen of the cable with your finger! We tried other speakers (from the official Bose dealer) - everyone cracks! It’s good that I didn’t have time to sell mini 1, I returned mini 2 to the store.