Just opened these. Bought it during the 11.11 from Linsoul (got them for $196 with the coupon), so it was an impulse buy. Loving them so far. I was originally set on the Fiio DM13, but these were too many issues being reported and I didn’t want to have to mess with firmware updates. These just work out of the box gaplessly. And they just sound so much better than my portable Sony CD player from the late 90s/early 2000s. Haven’t tried the optical out yet but I don’t think I need to do that as the onboard dac/op amp appears to be very transparent and neutral, which is all I can ask for.