I got my pair of FA003s today from spaceconvoy, as a upgrade/sidegrade from the HD558s.
AWESOME cans!! I think neutral really is a great way to describe them; that's how they sound to my ears. The HD558s were excellent but they had a warm kind of coloration, which was great for acoustic music, but made me want a little more out of bands and thicker rock mixes and such because they sound just a tad congested.
I went through the HD555 which had a warm midrange, and the M50, which had a scooped midrange, and I ended up wanting something that fused their sound signature and combined the strengths of both.
HD555: Great soundstage, good on acoustic and classical because of their warmth.
M50: Great bass, great for bands and pop and rock.
The last cans I owned were the HD558. Coming from them, I notice these differences:
- Faster! These things have a lot of speed and control. I am listening to Vivaldi, and wow, the super quick violin passages sound so effortless, yet so well textured.
- On that note, more detailed. I listened to a Rachmaninoff Prelude I'm pretty familiar with, and suddenly I hear all these subtle nuances associated with the sound of the piano... hard to explain but the piano just sounds more like a piano than I've heard in my past headphones, partly from the neutrality, and partly because of the detail in each note.
- Very well-controlled bass. Not as prominent as I expected, but notes are very distinct and tightly controlled overall. Good sub bass too, but it doesn't dominate the song! very nice.
- BALANCED across the spectrum! As I'm listening to well-mastered pop and rock, I really feel that the accompaniment, guitars, bass, and the vocals, as well as the drums, are all equally present, yet not at all competing for attention. The whole song is shining, and not just vocals, or the bass, or the cymbals.
- Electric guitars are crunchy and I love it. Vocals sound more human because of the detail.
- Soundstage and separation is very nice. I think the HD558s did it just a little better being open cans but I don't miss it at all with the FA003s.
I really have yet to find a well-mastered song that sounds bad on these. Every song just sounds so right, which from my experience means the cans I'm using are very neutral. I can hear what people mean when they say there is a mid treble peak, but it doesn't bother me.
Best purchase I've made. Now listening to "Gentle Breeze" by Sneaker Bird. Never knew how well this song was mastered until I put these on!