(Really) Initial Impressions:
Equipment: hifimediy asyncronous 24/96 DAC -> matrix m-stage. iPod Classic 6th gen -> Tralucent T1. iPhone 4.
All phones using ortofon tips, except the g2, which has tf10 tips.
Starting with the Cardas...Carlsan told me he put about 20 hours of burn on them, and I left them almost at max on my clip+ overnight. My impressions remain the same. It's a dark phone, but it's dark and sweet (to borrow a term from tinyman). It sounds almost like a dynamic driver version of the Stage Diver 3, except I remember the SD3 being a bit more on the dry side. Vocals have a slight fuzz around them in the centerstage, which is interesting because cues at the left/right extremes have good clarity. On Ben Howard's The Wolves, background vocals are rather subdued/clouded. The paradox is that there's a good bit of detail. Switching to the G2 is like removing foam from your ears. Strangely, I don't find the G2 to have much more detail than the Cardas, but it's just so much clearer, and the bass is a good deal cleaner without the bloat. I definitely hear more mid-bass in the Cardas as well. Did I mention the G2's clarity over the Cardas? The Cardas is also more intimate sounding overall to my ears.
On to the FA-4E.
The most linear of the bunch, with the cleanest, but least impactful bass. The bass really is a thing of beauty in its ability to punch and get out of the way. It reminds me of my Ety HF5, but with better extension down low. The mids are also very, very nice. The upper mids are a good deal more forward than in the ASG-2, giving better clarity and more transitional nuance in the space between the treble and mids. This also means you have to pump up the volume a notch or two in the G2 to get the same type of presence in the upper mids. The FA-4's mids have the ability to be more delicate, which is great for female vocalists like Ingrid Michaelson, and male singers like Dallas Green. The treble is perfectly aligned with the sound sig, but loses slightly to the G2's timbre. I'd take the FA-4's upper mid presence though. In my time listening, I haven't found myself wishing for more sub-bass extension or presence...amazing for a BA based phone.
My current standings: FA-4 = G2 > Cardas.
That's all for now. I'll do more this weekend, and I'll see what Gavin's silver/gold hybrid cable does to the FA-4's signature.