Yes, I am surprised but I am glad to hear something like this, eventually
Although the HAMT MKII is rated at 56ohm 105dB, oBrovo has put a 40mm AMT driver and a 57mm dynamic driver in each earcup, so it is not exactly a DAP-friendly headphone in my brief encounter.
Those who have followed the N7 thread will know FooFighter is a perfectionist. When he said the N7 amp is weak, he meant the N7 is weak when "compared to the TOTL competitors" to his ears. From another perspective, he means the DAC section of N7 is superior and is comparable to the DAC section of other DAPs above its price point, but the Amp stage of the N7 is ONLY in line with its price point, so the N7 Amp is the weaker than the N7 DAC.
It is most unfortunate that his comment was quoted out of context after FooFighte repeated his comment in various exchanges and "the amp of N7 is weak" became a widely spread conclusion in other HeadFi threads, FB groups, and other social media references. I am glad that FooFighter finally found a pairing that demonstrates the potential of the N7 amplification section.