Well, I finally picked up the ALO 780s from the post office today, and KNOWING that these require some burn in time, I connected them to my amp, but.... just couldn't resist taking a lil "sneak peek" (where have I heard that before??
)
So far, my baseline for comparison is the PL2500 w/ a Silver Dragon II cable
Quick synopsis of the current bedroom headphone rig:
Phones: PL2500s w/ SD II cable
Source: Rega Apollo
Amp: Meier HA2-MK II SE
AC\IC: van den Hul mainsserver\Shunyata AC cords\AQ Colorado 72v DBS
Also, power conditioning...
Rather modest setup, but enough to relax to at night!
I have Bill Evans Village Vangaurd (LIVE) disc 2 playing at the moment, and this recording really shows off Scott LaFaro's stand up bass work!
PL2500s\silver Dragon II: Hours on cable and phones:
A LOT!!
I.
Treble: Airy, detailed, leaning towards the smoooth side... not shrill nor metallic, at all!
II.
Midrange: Transparent, yet laid back... kind like you're 3 rows back. Details are still pretty noticeable, just not IN YOUR FACE details.
III.
Bass: Extends very low, well defined, not bloated.. You can definitely hear mutiple string plucks, as opposed to just one!
Needless to say, with that particular setup I was pretty much satisfied, so I'm praying these ALO modded 780s turn into a beast, well at least a little beasty, since I possibly sold my beloved 2500s!!!!!
ALO MODDED HFi-780 HOURS 0 minutes 0 seconds 30!! 
**** Keep in mind I expect this to become more refined over the next week!
I.
Treble: Slightly metallic sounding, grainy... but not piercing or sharp! Still smooth sounding
II.
Midrange: More upfront, closer to the stage, pretty much on stage with the artists!
III.
Bass: This is what I noticed from the moment I put the phones on!! The 2500s bass was well defined and tight, BUT the impact wasn't there for me... Could be a byproduct of my source, but with the ALO modded phones, the bass sounded, not only, tight right off the bat, but had IMPACT and more BODY!
This also is supposed to improve over time..
I am really optimistic, based upon my initial listening... More to come in the next couple of days!!