Anyone useing Ifi Zen Air Blue here?

Hello,

I am interested in buying the Ifi Zen Air Blue, my only doubt is that this tool cannot be upgraded and the DAC must use the default DAC, namely ESS Saber

  • Is the Ifi Zen Air Blue’s default DAC in the form of ESS Saber good quality, does it need to be upgraded to a better DAC?
  • What audio codec is the best using this Bluetooth Streaming?

thanks