I'll throw in some impressions here; been using since Friday night and it's a quality piece of kit! Fits greats after some minor tip experimentation.
It's definitely a challenge to drive, SE300 starts to distort at around 110/150 Vol on High Gain. I'll edit this with a dB value after I measure its actual effective volume amount later. Thank to
@FcConstruct for lending me his Fiio Q7 to take advantage of this this fully for a bit! The poor RU7 starts to clip over 50/100 Vol unfortunately, which I think translates to just under 75dB, which I find a bit too quiet for my tastes when rocking out to Duality.
I do really like the Balance tune, its really quite normal sounding (though I'm prob a basshead) to me, could easily listen to a full range of music genres (maybe even more so then Singularity) and even non-bassheads would fine it an easy listen. Regardless of which setting you choose, it's really shocking how good the timbre is on this no matter how much that bass driver is pushing. It's like you're sitting in front of a close pair of speakers and then there is a this sub behind you just doing it's own thing; really cool experience.
Great stuff
@Chang


