fiio q5s

Hi guys. Currently, I'm using my Q5 as the USB DAC to pair with my Topping L30. Considering an upgrade for my old Q5. I seldomly bring my Q5 out, so desktop usage is the priority. But still, sometimes I need a portable device with some power, like when going to a HiFi expo, or some offline...

So I use http:// www. digizoid. com/ power .php to calculate the mW needed to power headphones. My HiFiMan HE400i impedance is 35ohms and my bayerdynamics custom studios are 80ohms. Most manufacturer specs state for 16/32/300 ohms like for example: - My fiio k3 specs on unbalanced output...