Hi guys! Great, great review!
I am in a big doubt on Topping NX4 DSD versus iFi Nano iDSD Black Label.
The use will be with a Sen HD 600 and the idea is to use booth as a Portable Dac+Amp and in the near future also as a desktop Dac to use it with a tube amp.
Is the 40USD in the iFi worth it...