I've recently acquired a HE-400 which I am enjoying very much through my iBasso D4. However, upon doing some opamp rolling, I realized the limitations of a 5V USB input in that the opamps drivable at those voltages simply do not suffice for the HE-400 (I practically have to choose between impactful bass and clean, unveiled mid and upper range).
Thus I'm looking to get an amplifier. I've read good things about the Little Dot MKiii and I've always wanted a full-on tube amp (for the cool factor and bragging rights). I am concerned, however, about how well it can drive the HE-400 (low impedance, high power draw), seeing that the output wattage that the LD can pull off is just about comparable to my stock iBasso D4.
I understand that the Little Dot I+ is made for high power the lack of voltage gain in the tube stage worries me:
Can someone with experience comment on the matching between the MkIII and the HE-400? Or should I just go with an SS amp? Thanks!