With Class A and a well design circuit, it should work well. Just
make sure you have a proper pre-amplifier before the amplifier.
I usually dissuaded people from using the 6SE with "too good to be true" solutions like the cheap Ayima 07 amps, or their equivalents from Fosi and the competition, because their class D load dependency on 60 ohm (7.5x their projected coupling impedance) meant a substantial change in tuning, making the headphones audibly brighter. I also didn't trust their output protection, although I have used a Fosi myself for some time.
People sometimes went even crazier, getting professional Crown rack amplifiers to drive the 6SE or the HE6 OGs, only to limit them afterwards by using preamplifiers set to 10-20% on the dial. That they weren't bothered by the abysmal distortion levels, specially when giving them a such undersaturated signal, is a telltale sign that audiophiles hear what they want to hear, and are mostly oblivious to things that really make a tangible difference.
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