I have been using the USB output of my 3B + and I am very satisfied.
Unfortunately the UBS output is not perfect, to obtain a better SQ it is necessary to use filters and signal regenerators and supply current, as the energy of the RPi's USB output is not stable.
I use a Uptone Regen + USB Curiours Regen Link between the 3B + and the DAC, for those who use DAC powered by USB the gains are more evident.
As an option of these filters in addition to Uptone Regen and Regen ISO, there is also Wired4Sound Recovery and iFi iUSB (nano or micro) and iPurifier 2.
Unfortunately the UBS output is not perfect, to obtain a better SQ it is necessary to use filters and signal regenerators and supply current, as the energy of the RPi's USB output is not stable.
I use a Uptone Regen + USB Curiours Regen Link between the 3B + and the DAC, for those who use DAC powered by USB the gains are more evident.
As an option of these filters in addition to Uptone Regen and Regen ISO, there is also Wired4Sound Recovery and iFi iUSB (nano or micro) and iPurifier 2.
