Not OP. I use the Burson soloist for a set of LCD-4’s, 200 Ohm

The only time I need to set the amp to high gain is if I’m using a ton of DSP/EQ settings. Most of the time I don’t need to move past the medium gain setting, and I listen LOUD. It’d be tough to find a headphone that this amp can’t drive, including the Susvara. It’s overkill for most headphones.