Is there anything you want to know in specific?
Like the tl
r for the Arya is the same as the HE400se's Less treble, more power in the bass.
Some finer details are & note these are COMPARED, Not in general.
~ V1/V2 more slam, can hear the low end as a main focus regardless of every song, The Stealth has slightly more bass power & DB, but has a punch rather than a slam, It also doesn't have that low end focus the v1/V2 have unless the song has bass as a focus. (V1/V2 12-15inch sub loose, Stealth 10 inch sub tight punch)
~ Treble V1 peaky, V2 less peaky but still got peak issues. Stealth to controlled (compared to V2) to the point some instruments can sound wrong. Harps are the easy way to hear the issue if you want to compare yourself. This said it is slightly more detailed in the highs. Probably due to the soundstage difference.
~ Mids are similar enough, although the V1/V2 do have a bit more noticeable energy going for it due to the soundstage differnce.
~ Macro & Micro dynamics About the same. But perception is hard due to soundstage size, So had to go off game audio for Micro, Macro is easier to hear in songs.
~ Volume difference on the SP400 V1/V2 = 32 high gain, Stealth = 28 High gain. Just for reference & Fun HE6seV2 = 38-60 high gain depending how used to the sound you are.
~ Now to that soundstage difference,
so if you concentrate on the sound you realize its not as big or small as you think for both. But if you are just listening V1/V2 large & tall, comparable to HD800s, From your head to in front of you & space inbetween. Stealth from inside your head to your eyes/ears/face e.t.c.
~ Large space recordings sound like large space recordings on the Stealth, Far more so than the V1/V2 which also does it, but because its already larger soundstage.
~ Here is an interesting thing the V1, V2 because of the large soundstage its easy to focus on a sound. But with the Stealth is even easier to focus separate sounds even though the soundstage is smaller, They have more definition to the sound. almost an extra layer or focus to the sound. I think this is because the V1/V2 can at times sound like sounds going away from you (& towards you from afar) & the Stealth sounds like sounds are just coming towards you from there separate locations, If that makes sense? If Not, then just understand Very Easy to focus on separate sounds.
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Both have the dead spot in the centre for imaging.
~ The Stealth does vocals better, its almost a focus point like how the V2 does the low end.
~ The V1/V2 can get picky with low quality audio tracks, The stealth I have not notice many issues with lower quality audio sources.
~ Stealth does metal much better than the V1/V2.
~ V1/V2 does Electronic music better than the Stealth. Lets just say the V2 is more Fun to listen to with electronic music. Stealth is fine with it, just not as "fun".