Second owner selling a great pair of Hifiman HE6SE headphones with light use. World class cans at half the original price. At this price point, they're impossible to beat. Unbelievably light and comfortable. Includes the amplifier module that allows you to power them with a regular power amplifier so you won't need a
specialty headphone power amp. Includes all original parts and box.

Majorhifi review:

But when it comes to a rich, emotive sound with ample headroom and
clinical precision, the HE6se reigns supreme at its price point. No
other headphone under $2000 can offer this level of quality and comfort,
let alone the pinpointed soundstage that seems to simply drip with
resolution.

Final Analysis

The $1799 Hifiman HE6se delivers a mind-numbing tour-de-force of
deep, surging lows and glistening, soaring highs. Perfect for an
emotive and immersive listening experience, a wealth of soundstage and
detail add weight to any source. While it may remain out of reach for
most casual consumers, this high-end headphone gives any audiophile one
more impressive option to consider.