I have the HA-1, Sonica, Mojo, Xduoo XD-05, Xduoo TA-01, Fioo X5, CA DACMagic XS, Encore mDSD, aside from that, the BDP-105 can also work as an USD DAC. I gave my DACMagic XS and Encore mDSD away as I couldn't find any reasons/time to use those. They are/were all great values except for the Mojo. The Mojo and HA-1 are class A, but no audible advantage according to my ears and graphs. They are just fun to use, and I really like their portability and flexibility. DACs are very cost effective nowadays. In my opinion/experience there is no need to spend any more than a few hundred dollars, or even $200. I also think it does not make much sense to have one onboard an integrated amp, let the amp just amplify!!