I do find they need more power to really shine (they sound best balanced on my desktop rig), but the G7 drives them perfectly fine. The volume on the G7 goes up to 75. In normal mode it takes 65 to 70 depending on the tracks to get to the upper limits of my volume comfort. When I "trick it" into AUX mode I listen mostly in the 55 to 60 range. I had an external DAC/Amp with my old phone, and while it sounded awesome, it was a pain to carry around day to day. In looking for a 1 box solution I am perfectly happy with the G7. Between UAPP and Tidal I am all set file wise, and I find it is a great companion piece with the CL2's. I do not feel I have given up much from my old setup.