Any chance this thread can get back to just the amp impressions please? Interconnect cable fighting... go to the sound science forum.
USB interference, yes I witnessed that whilst doing both. With the long battery life there is no need to have it plugged in whilst using, it isn`t a DAC.
Regarding config in earlier posts, my preference is in my sig but a little insight:
Out 1 - for both my iems and my Momentums.
Gain - although everything is easy to drive and "in principle" there is no need for high gain, use it, sounds far better with the downside of little volume adjustment. It gives the whole sound energy. Try it for yourself, low gain, wind it up to volume of choice.....
High gain, not a lot of winding but it is clear the energy in sound is chalk and cheese. Although iems are sensitive I do believe they still need to be driven, low gain on "this" amp doesn`t cut it "for me"
Soo, for me to summarise:
LF ON - iems
LF/SF - Sennheiser Momentum (Fleetwood Mac - Never Going Back Again). This is the closest I have got to my "High Fidelity" goal so far, freaking amazing.