buy a better usb cable or a BT for system

One of the popular outboard supplies is Astron. I went with an expensive model that let's me dial in the voltage, but there are cheaper one's.

https://amzn.to/2pCDlxq

I think technically the 13.8V models are the one's to get if you don't care about adjustable voltage, but I have not confirmed this with Mytek yet.

The 12 Amp Astron power supply is what you need for the Brooklyn DAC. You can find them used for $50-$60, or new for just $120. The Brooklyn runs fine on 13.8 Volts, or you can carefully adjust the Astron inside to knock it down to 12V if you like. No need to buy the variable voltage version. I tried 5 different audiophile power supplies on my Brooklyn DAC, that ranged in price from $300-$1,000, and I liked the Astron quite a bit better all around. 

Just tried a Chromecast Audio,,,,brutal sound.....returning