Here is my Arya V3 Stealth. I've owned LCD-X, HD 800S, Clear MG in the price range and several mid-fi headphones including DCA Aeon RT, Senn 600 series and Campfire IEMS.
Build quality wise Arya is equal to junk, unboxing experience was felt like i brought something i find at the trash at home but at least sound quality proves otherwise.
I find sound quality to be neutral-bright. Some sizzle and harshness in the top end. I run them bass heavy songs with Topping G5 overnight, so if you are believer off burn-in, it's done before i test.
They slam equally good and no change in soundstage width depth imaging etc. with Lightning Dongle vs. G5. Anyone who says linear amp makes difference with lightning dongle needs to get their ears checked. These are very easy to run due to new stealth magnets.
I like Arya's, they do everything fine but bass doesn't slam like LCD-X, soundstage is not wide as HD 800 S, in fact not even close. Mids are sounding planar like just like LCD's so coming from Clear MG on for vocals, makes you desire for more. So overall, we got a all rounder but not a specialist.
Play's well with live music, sounds good with everything except bass heavy modern genres like hip-hop and metal/rock especially older recordings may sound a bit thin and sharp. Treble is sharper but equally detailed as HD 800 S.
Overall, i can understand the appeal for Arya but if i'm sacrificing downsides of build, design, packing and planar characteristics at least give me something special, therefore i'd prefer LCD-X > Clear MG = HD 800 S > Arya.
TLDR: Great all around sound characteristics with terrible build quality, nothing special. If you are seeking for lush, pillow like, warm signatures Arya isn't your thing.