I received today both the E30 and L30 (EU) in silver, they are smaller than what I thought, which is a bonus for me, the stack looks beautiful.
Just some notes, maybe it can be of help like others.
- after some hours of listening at 0 and +9 gain with Audeze LCD2 classic they are both definitely warm, but not something I'd consider hot, considering the room T is 26-27°c.. Maybe I'll try with a probe just out of curiosity.
- The E30 is on the bottom, L30 on top, so the volume pot is easily reachable, no problem for me with the headphone jack being too close with this configuration.
- I can't feel the little play on the volume pot. I can feel something though, more like an "elastic" turning (very minimal honestly), let's say it's not a super sharp turn. Sorry for the lack of better words, I'm not english or american.
- not sure for now, but I think I prefer + 9 gain with the LCD2 classic and volume around 12 o'clock, max 2 o'clock If I'm feeling brave, but it's dangerously loud. Relaxed listening in the evening I'd say 0 gain and 12 o'clock volume, so I guess for more hungry headphones the L30 has quite some power.
FYI E30 is s/n 2008xxx, L30 2007xxx.
So far I'm very satisfied, I guess I found everything I need: congratulation to JohnYang1997.