buy a better usb cable or a BT for system

Did you know the Brooklyn supports an external power supply? I'd invest in that before a new cable.

There is something terribly convenient about BT, but with Tidal now available via Google Chrome, with MQA, you may prefer to go that route.

I would not worry about usb cables, whatever some may say: http://archimago.blogspot.nl/2013/04/measurements-usb-cables-for-dacs.html
Bluetooth is not a very good connection. If you want to stream from your tablet/smartphone, why not get a Chromecast Audo and use its optical digital output? See here for details: http://archimago.blogspot.nl/2016/02/measurements-google-chromecast-audio_27.html

willemj,

Your quoting the same old single source that aligns with your beliefs is getting worn. Here is a new one to consider:

https://www.theguardian.com/science/brain-flapping/2016/jan/26/earth-totally-flat-conspiracy-bob

Dave