A very interesting and pleasant surprise with my ES3X's.
There's an album by King Crimson called "The ConstruKction of Light" (2000). Now, this is probably the most dense and intense of all KC albums as all tracks are fairly, well... intense - no nice melodic quiet tracks for the first time ever to contrast with such dense atmosphere.
I always thought this particular album was badly recorded as it always sounded as if the music was coming from a large tin, often sounding very boomy, and even though I think it's quite an underrated album - even by KC enthusiasts - I personally found its very raw power made it one of their best albums in their 40-year history. To make matters worse this is their only album where ALL the drumming & percussion is not acoustic - the drummer using an electronic kit throughout -, a very bold and daring move by KC, a band specially revered by guitarists & drummers (and fair share of bassists out there).
The problem I've always had with this album is that I could never listen to the whole thing as I found it extremely fatiguing using ALL my IEM's, my HD650's and AKG's K141 Monitor, and always kept wondering why this was such a bad recording for a band with previous great recordings.
Well, last night I happened to listen to it for the 1st time with my ES3X's and, shock horror, it turns out this album is FULL of very VERY low frequencies! For the first time I could discern exactly what's going on on this album. The ES3X handled it in a TOTALLY unexpected way. For the first time in 9 years I could clearly hear all those very low frequencies. No wonder, I thought, why I could just not listen to the whole thing - it's full of busy passages, most of which have got basses extending really low with some very intricate drumming & percussion also going on. In the end, for the first time, I managed to listen to the the entire album, and a very gratifying experience it was.