Hi. I'm back with more impressions on the Nano iCAN.
Honestly, since my last post, I have not been using it in a while because I just couldn't get it to sound right on my recently acquired Sennheiser HD 600.
I am still using the Audioengine D1 as my PC DAC and on its own, it is able to drive the HD 600 very loudly. I did try maxing out the gain on the D1 and it was too ppiercing to listen to. So moderate levels are fine.
Back to the Nano iCAN. Initially, I set the gain switches to maximum since it is assumed that the HD 600, having a high impedance, would benefit from the extra gain the switches would provide.
However, the sound that I got when plugging it to the D1 was more laid back and details were more obscured. Even with both the bass boost and 3D switches on, it still did not sound right.
Thus I retired the Nano iCAN for a long time but today, I was inspired to do it differently.
I set the switches on the Nano iCAN back to the lowest gain, turned the volume knob to full and used the D1's own volume knob as the control instead.
*Previously I had the D1's volume at around 50 percent, Nano iCAN switches set to maximum gain, and adjusted the volume control on the Nano iCAN itself*
And now... with the bass boost switched on, my HD 600 sounds freaking awesome!
It used to sound quite cold and thin in the bass department when only paired with the D1.
Now with this latest tweak, the headphones sound much more lusher, more fuller sounding and overall very pleasant ear candy listening experience. Not as harsh as before.
I did try turning on the 3D switch too and though it did increase the level of detail, I found it too bright for my taste.
Now this is what I call Hi-Fi.